😷 CPT Code 13131: Documentation & Billing Guide

Repair of Laceration - Forehead, Cheeks, Chin, Mouth, Neck, Axillae, Genitalia, Trunk and/or Extremities (Excluding Hands and Feet); Complicated or Extensive, Each Wound ≥2.5 cm but <5.0 cm

Last Updated: February 2026
Status: 2025 Medicare Fee Schedule Compliant
Specialty Tags:

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Element	Details
Code	13131
Code Type	Surgical Procedure - Wound Repair/Laceration Closure
Procedure Type	Complex laceration repair, trunk/extremities, 2.5-5.0 cm
Global Period	010 days (minor surgical procedure)
Work RVU (2025)	1.50 RVU
Practice Expense RVU (2025, Non-Facility)	0.71 RVU
Practice Expense RVU (2025, Facility)	0.37 RVU
Malpractice RVU (2025)	0.13 RVU
Total RVU (2025, Non-Facility)	2.34 RVU
Total RVU (2025, Facility)	2.00 RVU
2025 Medicare Fee (Non-Facility)	~ $75.72 (2.34 R V U \times$ 32.3465 CF × GPCI)
2025 Medicare Fee (Facility)	~ $64.69 (2.00 R V U \times$ 32.3465 CF × GPCI)
Conversion Factor (2025)	$32.3465
Estimated Commercial Insurance	$150 - 400
Global Period Includes	Pre-operative visit, procedure, post-operative visits (10 days)
Common Place of Service	Emergency Department (23), Office (11), Hospital outpatient (22), ASC (24)
Specialty	Emergency Medicine, Trauma Surgery, Primary Care, General Surgery
Procedure Time	15-45 minutes

📋SHORT DEFINITION

CPT 13131 describes complex laceration repair of moderate-sized wounds (2.5-5.0 cm) on the trunk, extremities (excluding hands/feet), cheeks, chin, neck, mouth, or axillae. “Complex” means the wound requires more than simple closure: requires layered closure, involves tissue planes, requires removal of foreign material, contaminated wound requiring extensive cleaning, wound edges that don’t oppose easily, or significant tissue damage requiring reconstruction.

LONG DEFINITION

CPT 13131 represents wound repair coding for moderately complex, intermediate-sized lacerations. This code is part of the complex wound repair family and distinguishes between simple and complex closure based on wound characteristics and required technique.

Wound Repair Code Family Overview

The complex wound repair codes (13100-series) describe:

Wounds requiring layered closure (more than one tissue plane)
Wounds with tissue loss or deep structures damaged (muscle, bone, nerve)
Contaminated or heavily soiled wounds requiring extensive cleaning
Wounds on areas difficult to close (areas of tension, irregular borders)
Wounds requiring significant undermining or advancement of tissue

Code Selection Based on Size and Location:

CPT 13131 specifically:

Location: Trunk, extremities (excluding hands/feet), cheeks, chin, neck, mouth, axillae
Size: ≥2.5 cm but <5.0 cm
Complexity: Requires complex closure (layered, extensive cleaning, tissue preparation)

Clinical Indications for 13131

Traumatic Lacerations:

Laceration from motor vehicle accident
Laceration from machinery injury
Stabbing wound with tissue damage
Animal bite with tissue damage

Surgical Lacerations:

Post-surgical wound dehiscence (separation)
Traumatic wound during operative procedure

Contaminated/Dirty Wounds:

Heavily soiled from soil, rust, or debris requiring extensive cleaning
Requires more than simple suturing
May require local wound debridement, removal of foreign material

Wounds with Tissue Damage:

Wound with muscle involvement
Wound with nerve injury requiring repair
Laceration with bleeding requiring hemostasis before closure
Laceration with structural damage

Procedure Technique - Complex Closure

Assessment and Preparation:

Complete wound examination
Assessment of depth, tissue involvement, structural damage
Neurovascular status evaluated
Tetanus status reviewed

Wound Cleaning and Preparation:

Irrigation to remove debris, foreign material
Local anesthesia infiltration or regional anesthesia
Shaving of hair from wound margins (NOT clipping)
Antiseptic preparation (Betadine, chlorhexidine, or alcohol)
Sterile draping of wound area

Hemostasis:

Bleeding controlled via pressure, cautery, or hemostatic agents
Vessels tied off if necessary
Tourniquet applied if extremity wound (temporary)

debridement (if needed):

Removal of devitalized tissue
Removal of foreign material
Wound edges trimmed to viable tissue

Closure Technique - Layered:

Deep layer(s): Absorption sutures (e.g., 4-0 or 5-0 Vicryl) to approximate deeper tissue planes
Dermis: Fine absorbable sutures (5-0 or 6-0 Vicryl) to approximate dermis
Skin: Non-absorbable or absorbable sutures (5-0 or 6-0 nylon, prolene, or polydioxanone) for skin surface

Special Techniques (may be included in complex closure):

Undermining tissue to reduce tension on wound edges
Tissue advancement or transposition
Removal of skin excision at wound margins (e.g., beveling edges)

Post-Closure:

Hemostasis verified
Sterile dressing applied
Suture removal timing documented

Procedure Duration: Typically 15-45 minutes

Key Distinctions

Code	Description	Size	Complexity	RVU (Work)
12001-12007	Simple repair (dermis and epidermis)	0.1-7.6 cm	Simple closure	0.25-0.35
12031-12037	Layered closure, simple wound	0.1-7.6 cm	Moderate	0.35-0.50
13100	Complex repair, face, <2.5 cm	<2.5 cm	Complex	1.06
13101	Complex repair, face, 2.5-5.0 cm	2.5-5.0 cm	Complex	1.35
13131	Complex repair, trunk/extremities, 2.5-5.0 cm	2.5-5.0 cm	Complex	1.50
13132	Complex repair, trunk/extremities, 5.0-7.5 cm	5.0-7.5 cm	Complex	1.88
13133	Complex repair, trunk/extremities, ≥7.5 cm	≥7.5 cm	Complex	2.60

Critical Distinction - Simple vs. Complex:

Simple repair (12001-12007): Involves epidermis, dermis, and subcutaneous tissue; no layered closure; straightforward wound
Complex repair (13100-13153): Requires layered closure, extensive debridement, tissue undermining, or significant preparation; higher RVU value

Geographic Location Matters:

Face codes (13100-series) - Higher RVU for face wounds (13101 = 1.35 vs. 13131 = 1.50, but face is higher)
Trunk/extremity codes (13131-series) - For trunk and extremities (excluding hands/feet)
Hand/foot codes (13150-series) - Separate, higher RVU codes for hands/feet

Important Note: Many clinicians incorrectly bill CPT 13131 for simple lacerations. If the wound truly requires only simple closure without layering, use CPT 12031 or 12032 instead (simple layered closure). Use 13131 only if complex closure techniques required.

WORK RELATIVE VALUE UNITS (wRVUs) & COMPONENTS

Work RVU Breakdown (2025)

RVU Component	Value	What It Represents
Work RVU	1.50	Physician work, technical skill, decision-making
Practice Expense RVU (non-facility)	0.71	Suture materials, instruments, staff support
Practice Expense RVU (facility)	0.37	Lower due to hospital/ASC equipment overhead
Malpractice RVU	0.13	Malpractice insurance and liability (minor surgical)
TOTAL RVU (non-facility)	2.34	Total relative value units
TOTAL RVU (facility)	2.00	Total relative value units (lower)

RVU Conversion to Dollar Amount (2025)

Formula: RVU × Conversion Factor (CF) × Geographic Practice Cost Index (GPCI) = Payment

2025 Medicare Conversion Factor: $32.3465

Typical Calculations (Non-Facility, GPCI = 1.0):

1.50 wRVU × $32.3465 = * *$ 48.52** (work component)
0.71 PE RVU × $32.3465 = * *$ 22.97** (practice expense)
0.13 MP RVU × $32.3465 = * *$ 4.21** (malpractice)
Total = ~$75.72 per procedure (non-facility, GPCI 1.0)

Facility-Based (Hospital/ED, ASC):

1.50 wRVU × $32.3465 = * *$ 48.52** (work component, same)
0.37 PE RVU × $32.3465 = * *$ 11.97** (practice expense, lower)
0.13 MP RVU × $32.3465 = * *$ 4.21** (malpractice, same)
Total = ~$64.69 per procedure (facility, GPCI 1.0)

Real-World Range (2025):

Non-Facility (office/ED): $70 -$ 90 (depending on GPCI)
Facility-Based (hospital OR, ASC): $60 -$ 75

GLOBAL PERIOD

Global Period Status: 010 days (10-Day Global)

What This Means:

CPT 13131 has a 10-day global period
Includes: Pre-operative assessment, procedure, post-operative visits for 10 days
One flat fee covers all bundled services
No additional payment for routine post-operative complication management during 10 days
Separate payment only for unrelated E/M services (use modifier -24)

Billing Implications:

Cannot bill separate E/M codes within 10 days for wound-related care (follow-up, suture removal, dressing changes)
CAN bill separate E/M code for unrelated problems with modifier -24 (e.g., patient injured in accident with laceration; also has unrelated infection)
Same-day E/M + 13131 can be billed together with modifier -25 on E/M if separately identifiable (e.g., E/M for injury assessment + 13131 for repair, both necessary)

DOCUMENTATION REQUIREMENTS FOR 13131

Minimum Documentation Components

Pre-Operative Assessment:

History:

Mechanism of injury: How was laceration sustained (motor vehicle accident, machinery, animal bite, fall, laceration with sharp object, etc.)
Time of injury: When did injury occur (important for infection risk, tetanus status, tissue viability)
Last tetanus: Document tetanus immunization status; last tetanus booster date
Allergies: Documented, especially to antiseptics, local anesthetics
Medical history: Relevant to wound healing (diabetes, immunosuppression, anticoagulation, etc.)
Prior treatment: Any first aid, wound cleaning, bandaging before presentation

Wound Assessment - CRITICAL:

Location: Specific anatomic location (e.g., “right lateral thigh,” “left flank,” not just “leg”)
Length/Size: Measured length in cm (e.g., “3.2 cm laceration”)
Depth: Depth of wound (superficial, through dermis, involving subcutaneous tissue, muscle, etc.)
Wound characteristics:
- Contamination: Clean, contaminated, dirty/infected
- Edges: Whether wound edges are sharp, jagged, ragged, or devitalized
- Tissue damage: Muscle involvement, nerve/vessel damage
- Foreign material: Debris, dirt, glass, other material present (note removal attempt)
Neurovascular status: Distal pulses palpated and documented; sensation assessed
Vascular status: Any active bleeding, hemostasis achieved with what method
Muscle/structure involvement: Any muscle, bone, nerve, tendon involvement documented

Physical Examination:

Full wound examination documented
Assessment of depth and tissue involvement
Neurovascular assessment
Functional assessment (e.g., hand movement if hand adjacent to wound—to assess nerve/tendon involvement)

Complexity Assessment - CRITICAL FOR 13131: Documentation must justify “complex” repair. Note:

Layered closure required? Why? (depth, tissue planes involved)
Extensive debridement needed? Why? (contamination, foreign material)
Significant hemostasis required? Why? (arterial bleeding, multiple bleeders)
Tissue undermining or advancement? Why? (reduce tension, close defect)
Any foreign material removed? What?
Wound edges trimmed? Why?

Procedure Documentation:

Anesthesia:

Type used (local infiltration, regional block, topical + local, procedural sedation, general)
Specific anesthetic agent and volume
Site of infiltration or block

Cleaning and Preparation:

Irrigation: Copious irrigation performed (specify amount of fluid, e.g., “irrigated with 500 mL normal saline”)
Antiseptic: Type used for skin prep (Betadine, chlorhexidine, alcohol, etc.)
Hair removal: Hair shaved from wound margins (if performed; document NOT clipped)

Hemostasis:

Bleeding control method (pressure, cautery, hemostatic agents, vessel ligation, tourniquet)
Vessels identified and tied if necessary
Any tourniquet applied (specify location, time)
Final hemostasis status confirmed

Debridement:

Devitalized tissue removed? Describe
Foreign material removed? What? (glass, dirt, rust, other)
Tissue excision at wound margins (e.g., beveling)? Why?

Closure Technique - CRITICAL:

Description of layering:
- Deep layer(s) closed: With what suture material, size, and technique (interrupted, running, buried knots?)
- Example: “Deep layer closed with interrupted 4-0 Vicryl sutures”
- Dermis closed: With what suture material and technique
- Example: “Dermis approximated with running 5-0 Vicryl suture”
- Skin surface: With what suture material and technique
- Example: “Skin surface closed with interrupted 5-0 nylon sutures”
Number of layers: Document that closure is multilayered (e.g., “3-layer closure”)
Tension: Any undermining or tissue advancement to reduce wound tension? Document method
Wound length: Final wound length after closure
Suture removal timing: When sutures should be removed (e.g., “7-10 days”)

Dressing:

Type of dressing applied
Antibiotic ointment? Which type?
Bandage type

Post-Operative Assessment:

Hemostasis confirmed
Wound edge approximation verified
Any remaining bleeding
Neurovascular status post-closure

Complications:

None vs. specific issues (excessive bleeding requiring additional hemostasis, contamination encountered, nerve/vessel injury noted, etc.)

Post-Operative Instructions:

Activity restrictions (e.g., “keep wound clean and dry,” “no strenuous activity × 3 days”)
Medication instructions (antibiotics, pain management, tetanus prophylaxis)
Wound care (dressing changes, when to re-dress)
Return precautions (signs of infection, dehiscence, neurovascular compromise)
Suture removal appointment (specific date/time or “call office for appointment in 7-10 days”)

BILLING RULES & MODIFIERS

Global Period Coverage

What’s Included in 13131: ✓ Pre-operative assessment ✓ The wound repair procedure with complex closure ✓ Post-operative visits within 10 days (follow-up, suture removal, dressing changes) ✓ Routine post-operative complication management

✗ NOT Included (Can bill separately):

Unrelated E/M during 10-day period (use modifier -24)
Separately identifiable E/M same day (use modifier -25 on E/M)

Common Modifiers

Modifier	Description	When to Use
-25	Significant, separately identifiable E/M	When both E/M and repair performed same day; apply to E/M
-24	Unrelated E/M during postoperative period	When billing E/M for unrelated issue during 10 days
-76	Repeat by same physician	If same wound requires re-repair within 10 days
-77	Repeat by different physician	If different physician completes repair started by another
-59	Distinct procedural service	Rare with wound repair
None (most common)	Standard billing	Routine single wound repair

Modifier -25 Usage (Common in ED):

When: Patient presents with laceration; provider evaluates injury (E/M) AND repairs laceration (13131)
Apply -25 to: The E/M code (99281-99285), not the wound repair code
Example: 99284-25 (ED visit for laceration evaluation) + 13131 (wound repair)

MEDICARE RULES FOR 13131

CMS-Specific Rules & Policies

1. Global Period Management

10-day global period for wound repair
All routine post-op care included; no separate billing
Unrelated services must use modifier -24

2. Facility vs. Non-Facility Billing

Non-Facility (office/ED): Higher PE RVU (0.71), higher reimbursement (~$76)
Facility (hospital OR, ASC, ED facility portion): Lower PE RVU (0.37), lower reimbursement (~$65)
ED facility charges billed separately by hospital

3. E/M + Wound Repair Billing (Common in ED)

Can bill E/M + 13131 same day with modifier -25 on E/M
E/M must be separately identifiable (not routine to repair)
Common scenario: Patient injured; requires evaluation AND repair

4. Multiple Wounds Same Visit

If multiple wounds requiring repair, each wound coded separately
Sum RVU for each wound repair code
Example: Two separate 3cm lacerations = 13131 + 13131 (bill twice)
Note: Some payers have bundling policies for multiple wounds; verify payer

5. Complex vs. Simple Determination

CMS does NOT provide specific criteria
Determination based on actual complexity: layering required? extensive cleaning? significant tissue work?
If wound truly requires only simple closure (12031-12032 level), do NOT upcode to 13131
Auditors review charts for appropriate code selection

LOCAL COVERAGE DETERMINATIONS (LCDs) & NATIONAL COVERAGE

National Coverage Determination (NCD)

There is NO specific NCD for CPT 13131.

General Medicare Coverage Policy:

Wound repair is covered when medically necessary
Complex wound repair (13131) covered when complexity justified
Documentation must support level of complexity claimed

Local Coverage Determinations (LCDs) - MAC-Specific

LCDs vary by Medicare Administrative Contractor (MAC) jurisdiction.

Most MACs have no specific wound repair LCD, but general principles:

Requirement	Details
Medical Necessity	Laceration requiring repair for hemostasis and wound closure
Documentation	Wound assessment, complexity, technique documented
Diagnosis Code	ICD-10 showing laceration of appropriate body part
Complexity Justified	For 13131, documentation must support complex closure

2025 REIMBURSEMENT INFORMATION

Medicare 2025 Fee Schedule

CPT 13131 - Complex Laceration Repair, Trunk/Extremities, 2.5-5.0 cm

Category	Value
Work RVU	1.50
Practice Expense RVU (non-facility)	0.71
Practice Expense RVU (facility)	0.37
Malpractice RVU	0.13
Total RVU (non-facility)	2.34
Total RVU (facility)	2.00
Conversion Factor (2025)	$32.3465
National Average Fee (Non-Facility, GPCI 1.0)	$75.72
Estimated Range (Non-Facility)	$70- 90
National Average Fee (Facility, GPCI 1.0)	$64.69
Estimated Range (Facility)	$60 - 75

Year-Over-Year Comparison (2024 vs 2025)

Metric	2024	2025	Change
Work RVU	1.50	1.50	—
PE RVU (non-facility)	0.71	0.71	—
CF	$33.2875	$32.3465	-2.8%
National Average (Non-Facility)	~$78.05	~$75.72	-2.8%

Commercial Insurance & Medicaid Reimbursement (2025)

Commercial Insurance:

Typically pays 1.5-2× Medicare rates (much more modest markup than surgical codes)
Estimated 13131 payment: $150 -$ 400 (varies by payer)
Most payers cover wound repair with appropriate documentation

Medicaid:

Varies by state
Estimated 13131 payment: $40 -$ 120 (state-dependent)
Most states cover wound repair when medically necessary
ED visit may also be covered (facility charge separate)

Self-Pay/Cash Price:

Typically $100 -$ 300 (lower than surgical procedures; more straightforward)
ED charges typically higher due to facility overhead

Laceration Repair Code Families

Code	Description	Size	Complexity	RVU (Work)
12001	Simple closure, face/neck <2.5 cm	<2.5 cm	Simple	0.25
12002	Simple closure, face/neck 2.5-5.0 cm	2.5-5.0 cm	Simple	0.30
12031	Layered closure, trunk/extremities <2.5 cm	<2.5 cm	Simple/layered	0.35
12032	Layered closure, trunk/extremities 2.5-5.0 cm	2.5-5.0 cm	Simple/layered	0.40
13100	Complex closure, face, <2.5 cm	<2.5 cm	Complex	1.06
13101	Complex closure, face, 2.5-5.0 cm	2.5-5.0 cm	Complex	1.35
13131	Complex closure, trunk/extremities, 2.5-5.0 cm	2.5-5.0 cm	Complex	1.50
13132	Complex closure, trunk/extremities, 5.0-7.5 cm	5.0-7.5 cm	Complex	1.88
13151	Complex closure, hand/foot, <2.5 cm	<2.5 cm	Complex	1.45
13152	Complex closure, hand/foot, 2.5-5.0 cm	2.5-5.0 cm	Complex	2.10

Key Comparisons:

12032 vs. 13131 - Same size (2.5-5 cm), different complexity. 12032 = simple layered closure (0.40 RVU). 13131 = complex closure with extensive work (1.50 RVU).
13101 vs. 13131 - Same complexity (complex), same size (2.5-5 cm), different location. 13101 = face (1.35 RVU). 13131 = trunk/extremities (1.50 RVU). Trunk/extremities actually higher RVU.
13131 vs. 13132 - Same complexity and location (trunk/extremities), different size. 13131 = 2.5-5 cm (1.50 RVU). 13132 = 5-7.5 cm (1.88 RVU).

FREQUENTLY BILLED SCENARIOS FOR 13131

Scenario 1: Laceration from Motor Vehicle Accident

Patient: 34-year-old motor vehicle accident victim with laceration to left flank from steering column

Clinical Assessment:

Laceration: Left lateral flank, 3.5 cm long, 0.8 cm deep (through dermis and into subcutaneous fat)
Contamination: Dirty (from vehicle interior)
Hemostasis: Oozing bleeding controlled with pressure; no arterial bleed
Tissue damage: Subcutaneous tissue disrupted; no muscle involvement

Complexity Elements:

Contamination requiring extensive irrigation (500 mL normal saline)
Layered closure required: deep fat closure, dermis closure, skin closure
Undermining of edges to reduce tension

Procedure:

Local anesthesia (1% lidocaine with epinephrine, 20 mL)
Extensive irrigation
Hemostasis achieved with pressure (no cautery needed)
Layered closure: 4-0 Vicryl (deep layer), 5-0 Vicryl (dermis), 5-0 nylon (skin)
Antibiotic ointment and bandage applied

Coding:

13131 (complex laceration repair, left flank, 3.5 cm)
Diagnosis: S31.101A (open laceration of left lower quadrant of abdominal wall), W61.02XA (struck by other specified motor vehicle)

ED Setting:

May also bill: 99284-25 (ED visit for trauma evaluation)
Facility charges: ED facility fee billed by hospital separately

Scenario 2: Animal Bite with Tissue Damage

Patient: 28-year-old with dog bite to right arm

Clinical Assessment:

Laceration: Right forearm (proximal), 4.2 cm long, 1.2 cm deep
Tissue damage: Puncture-type wound with tissue crushing from bite
Contamination: Dirty (animal saliva, potential rabies/tetanus exposure)
Hemostasis: Minor oozing
Neurovascular: Intact (distal pulses strong, sensation intact)

Complexity Elements:

Contaminated bite wound requiring extensive cleaning and irrigation (750 mL)
Tissue crushing requiring debridement of devitalized tissue
Muscle fascia disrupted, requiring fascial closure
Multiple tissue planes involved

Procedure:

Local anesthesia
Copious irrigation with antibiotic solution
Debridement of crushed/devitalized tissue
Layered closure: 3-0 absorbable (fascia), 4-0 Vicryl (deep subcutaneous), 5-0 Vicryl (dermis), 5-0 nylon (skin)
Tetanus booster administered (current on vaccine)
Rabies evaluation and post-exposure prophylaxis recommended

Coding:

13131 (complex laceration repair, right forearm, 4.2 cm)
Diagnosis: S51.821A (open bite of right forearm, initial encounter),W61.01XA (bitten by dog)

Scenario 3: E/M + Wound Repair (ED Setting)

Patient: 45-year-old presents to ED with laceration to right leg from sharp object injury

ED Encounter:

History: Stepped on broken glass
Physical exam: Laceration right anterior leg, 3.0 cm, with foreign material visible
Assessment: Laceration requiring repair; rule out foreign body; neurovascular intact
E/M Level: 99283 (established) or 99284 (new) - moderate complexity

Procedure:

Local anesthesia
Extensive irrigation (1 L) to remove glass fragments
Visualization confirms no retained foreign body
Complex closure: 4-0 Vicryl (subcutaneous), 5-0 Vicryl (dermis), 5-0 prolene (skin)

Coding:

99284-25 (ED visit, moderate complexity, separate identifiable service)
13131 (complex laceration repair, right leg, 3.0 cm)
Facility charges (ED facility fee, supply charges)

DOCUMENTATION TIPS FOR 13131

What to Document

✓ SHOULD INCLUDE:

Mechanism of Injury - How was laceration sustained; time of injury
Wound Location - Specific anatomic location (not just “leg”; specify “right anterior leg”)
Wound Size - Measured length in cm (e.g., “3.5 cm”)
Wound Depth - Depth description (superficial, through dermis, subcutaneous, muscle)
Contamination Assessment - Clean, contaminated, or dirty; debris or foreign material present?
Tissue Damage - Muscle involvement, nerve/vessel involvement, tissue crushing
Hemostasis Status - Bleeding characteristics, hemostasis method
Neurovascular Assessment - Distal pulses, sensation intact
Complexity Justification:
- Layered closure required? Why?
- Extensive cleaning? Why? (contamination details)
- debridement? Why? (devitalized tissue, debris)
- Hemostasis method? (tourniquets, cautery, vessel ligation?)
- Undermining? Why? (tension reduction)
Anesthesia - Type, agent, volume
Irrigation - Amount of fluid, solution type
Closure Technique - CRITICAL:
- Describe layers: “Deep layer closed with [material], dermis with [material], skin with [material]”
- Suture materials and sizes
- Dressing applied
Tetanus Status - Documented and updated if needed
Complications - None or specific issues encountered
Post-Operative Instructions - Suture removal timing, activity restrictions, signs to report

✗ SHOULD AVOID:

Vague wound description (“leg laceration” without specifics)
No size measurement (just “laceration”)
Missing complexity justification (claiming complex without documenting why)
No documentation of layering technique
Copy-paste documentation
Inadequate wound assessment documentation
No mention of contamination or debris
Missing neurovascular assessment

Sample Documentation Template

LACERATION REPAIR NOTE - Complex Closure (CPT 13131)

PATIENT: [Name]
DATE/TIME: [Date, time]
PROVIDER: [Name, Credentials]
LOCATION: Emergency Department / Office / Other

CHIEF COMPLAINT: Laceration

HISTORY OF PRESENT ILLNESS: [Age]-year-old patient presents with laceration sustained at [time] from [mechanism: motor vehicle accident / animal bite / sharp object / fall / etc.].

INJURY ASSESSMENT:

Time of injury: [Time]; injury [minutes/hours] old
Mechanism: [Specific description]
Symptoms: Pain [X/10], bleeding, functional impairment
Tetanus status: [Current / needs booster / unknown]; last tetanus [date or “unknown”]
Allergies: [Noted; especially to local anesthetics, antiseptics]

PHYSICAL EXAMINATION:

Wound Assessment:

Location: Right/left [specific location], e.g., “right anterior thigh” or “left lateral flank”
Length: [X.X] cm (measured)
Depth: [Superficial / through dermis / subcutaneous / muscle involvement]
Wound characteristics:
- Edges: Sharp, clean wound / jagged / irregular / crushed from trauma
- Contamination: Clean / contaminated / dirty (soil, debris, animal matter, etc.)
- Foreign material: Glass, dirt, rust, other material present: [specify]; removed: [yes/no/partially]
Tissue involvement:
- Muscle: [No involvement / involved]; extent: [describe]
- Nerve/Vessel: Neurovascular examination: Distal pulses present and normal [document bilateral if applicable]; Sensation intact
- Tissue viability: Viable tissue / devitalized tissue present [describe]

Hemostasis Status:

Bleeding: [Brisk / oozing / self-limited]
Hemostasis achieved: [Pressure / self-limited bleeding]; no active bleeding currently

CLINICAL ASSESSMENT:

Complexity Justification (CRITICAL for CPT 13131): This is a complex laceration repair requiring layered closure for the following reasons:

Contamination: Wound is [contaminated / dirty] requiring extensive cleaning and irrigation
Tissue damage: [Describe: crushing from trauma / devitalized tissue requiring debridement / deep tissue involvement / etc.]
Closure technique: Multiple tissue planes involved requiring layered closure
Hemostasis: [Significant bleeding requiring specific hemostasis technique / vessel ligation / cautery / etc.]
[Other complexity factors: undermining, tissue advancement, extensive debridement, etc.]

PROCEDURE:

Anesthesia: Local anesthesia administered: [Type and concentration], [volume] mL infiltrated into wound margins and surrounding area

Cleaning and Preparation:

Wound irrigated copiously with [normal saline / antibiotic solution / other]: [Volume] mL total irrigation
Antiseptic preparation: [Betadine / chlorhexidine / alcohol / other]
Hair shaved from wound margins (not clipped)

Hemostasis: Bleeding controlled with [pressure / cautery / hemostatic agent / vessel ligation / other]. Final hemostasis achieved; no active bleeding.

Debridement and Preparation: [If applicable: Devitalized tissue debrided. Foreign material removed (specifically describe what removed).]

Closure - LAYERED APPROACH:

Layer 1 - Deep Layer (Subcutaneous/Fascia):

Suture material: [e.g., 4-0 absorbable (Vicryl)]
Technique: [Interrupted / running] sutures
Placement: Approximates deep subcutaneous tissue and fascia
Result: Deep layers approximated without tension

Layer 2 - Dermis:

Suture material: [e.g., 5-0 absorbable (Vicryl)]
Technique: [Running / interrupted] sutures
Placement: Dermal layer approximation
Result: Dermis precisely approximated

Layer 3 - Skin Surface:

Suture material: [e.g., 5-0 nylon or prolene] (non-absorbable)
Technique: [Interrupted / running] sutures
Placement: Skin surface closure
Result: Skin edges perfectly approximated; no tension on skin

Special Techniques: [If applicable: Tissue undermining performed to reduce wound tension. Tissue advancement: [describe if applicable].]

Final Assessment:

Wound length: [X.X] cm after closure
Hemostasis: Confirmed; no active bleeding
Wound edge approximation: Excellent
Dressing: [Type applied, e.g., antibiotic ointment + sterile gauze + bandage]

COMPLICATIONS: None

TETANUS PROPHYLAXIS: Tetanus status reviewed. [Current on booster / tetanus booster administered [date] / patient declined / recommend follow-up]

POST-OPERATIVE INSTRUCTIONS:

Activity: Limit strenuous activity; keep wound clean and dry
Dressing: Change dressing as directed; keep clean and dry
Medications: Antibiotics (if prescribed): [type, dose, duration]; pain management: [medication, dosing]
Suture removal: Scheduled for [date/time] or “call office in [7-10] days for suture removal appointment”
Return precautions: Return if signs of infection (fever, increased redness, purulent drainage), dehiscence, neurovascular changes, or uncontrolled pain

AUDIT DEFENSE CHECKLIST FOR 13131

Before billing 13131, verify:

RED FLAGS FOR AUDITORS

13131 claims are at audit risk if:

❌ Complexity not justified (claiming complex closure without explaining why)
❌ No documentation of layered closure (simple closure billed as complex)
❌ Wound size not measured (just description like “moderate-sized”)
❌ Location vague (“leg” instead of specific location)
❌ No wound depth documented
❌ Minimal contamination but coded as complex
❌ No evidence of extensive cleaning/irrigation
❌ Documentation appears copy-pasted or generic
❌ Diagnosis code doesn’t match wound location
❌ Simple closure technique described but complex code billed
❌ No suture material specifics documented
❌ Wound size borderline and complexity questionable (may trigger manual review)

FREQUENTLY ASKED QUESTIONS (FAQs)

Q: What’s the difference between 13131 and 12032 (both are 2.5-5 cm)?
A: 12032 is simple or layered closure of uncomplicated wounds. 13131 is complex closure for wounds requiring significant work: contamination, extensive cleaning, tissue damage, multiple tissue planes, or significant hemostasis. If the wound truly needs only simple closure, use 12032 (0.40 RVU). Use 13131 (1.50 RVU) only if complexity truly justified.

Q: Can I bill 13131 + E/M same day?
A: Yes. Bill E/M with modifier -25 (separate identifiable service) + 13131. E/M must be separately identifiable (e.g., ED visit for injury assessment is separately billable from wound repair). Common in ED: 99283-25 + 13131.

Q: What if the patient has multiple lacerations?
A: Bill each laceration separately. Example: Two lacerations (3 cm each) = 13131 + 13131. Total RVU = 1.50 + 1.50. Verify payer bundling policy; some payers may have multiple wound policies.

Q: How do I measure wound size for coding?
A: Measure the length in cm. The code describes “length” not area. Example: A 3.5 cm × 1.5 cm laceration = 3.5 cm for coding purposes.

Q: Should I bill 13131 for a contaminated wound even if the closure is straightforward?
A: Yes, if the wound truly requires complex cleaning/preparation due to contamination. If just a clean wound that requires simple closure, use 12032. The determination hinges on the actual work and complexity of the repair, not just contamination alone (though contamination often correlates with complex closure needs).

Q: What’s the global period for 13131?
A: 10 days. All routine post-operative care (follow-up visits, suture removal, dressing changes) is included. Cannot bill separate E/M for wound-related care within 10 days. Can bill separate E/M for unrelated issues with modifier -24.

Q: Can I bill for suture removal separately?
A: No. Suture removal is included in the global period and cannot be billed separately. It’s part of the flat fee for 13131.

Q: Do I need to bill separate codes for the local anesthetic or sutures?
A: No. Anesthetic and suture materials are included in the procedure code. Do not bill separately.

REAL-WORLD BILLING TIPS

Tips to Maximize Compliance & Revenue

Document complexity thoroughly - Explain specifically WHY complex closure required
Measure wound size - Document exact length in cm
Use -25 modifier for ED E/M - When E/M + repair performed same day, modifier -25 on E/M
Keep notes specific - Describe actual wound and technique; avoid copy-paste
Describe layer-by-layer closure - Specific suture materials, sizes, and techniques for each layer
Document contamination assessment - If contaminated, extensive irrigation volume noted
Include hemostasis method - Important for complexity determination
Assess correctly: 13131 vs. 12032 - If wound truly simple, don’t upcode; risk of denial and audit
Tetanus documentation - Status and any booster administered
Post-operative instructions - Clear suture removal timing and return precautions documented

BILLING & CODING RESOURCES

Recommended Resources:

AMA CPT Manual 2025 - Official CPT code definitions
CMS Fee Schedule Database: https://www.cms.gov/medicare/physician-fee-schedule
MAC LCDs: https://www.cms.gov/cclc/lcd
American College of Emergency Physicians (ACEP): https://www.acep.org (coding resources, ED coding guidance)
American Academy of Family Physicians (AAFP): https://www.aafp.org
Your payer’s provider manual - Payer-specific requirements

SUMMARY TABLE

Element	Details
Official Definition	Complex laceration repair, trunk/extremities (excluding hands/feet), 2.5-5.0 cm
Global Period	010 days (10-day global)
Work RVU (2025)	1.50
Total RVU (2025, Non-Facility)	2.34
Medicare Payment (2025, Non-Facility)	~$76
Medicare Payment (2025, Facility)	~$65
Typical Time	15-45 minutes
Provider Required	Emergency physician, family medicine, general surgery, nurse practitioner, PA
Common Modifiers	-25 (separate E/M), -24 (unrelated E/M), -76 (repeat by same provider)
Typical Use	Contaminated wound, tissue damage, layered closure required
Common Mistakes	Upcoding simple to complex; inadequate complexity documentation; not using -25 for ED E/M
Audit Risk	Moderate (complexity determination common focus; simplicity to complexity upgrades are audited)
Bundling	Sutures and anesthesia included; cannot bill separately
Telehealth Allowed	No (requires in-person wound assessment and repair)

Document Created: February 2026
Compliant with: 2025 Medicare Physician Fee Schedule, CMS National and Local Coverage Determinations
Last Updated: February 2026

Explorer

13131

😷 CPT Code 13131: Documentation & Billing Guide

Repair of Laceration - Forehead, Cheeks, Chin, Mouth, Neck, Axillae, Genitalia, Trunk and/or Extremities (Excluding Hands and Feet); Complicated or Extensive, Each Wound ≥2.5 cm but <5.0 cm

Last Updated: February 2026 Status: 2025 Medicare Fee Schedule Compliant Specialty Tags:

QUICK REFERENCE

📋SHORT DEFINITION

LONG DEFINITION

Wound Repair Code Family Overview

Clinical Indications for 13131

Procedure Technique - Complex Closure

Key Distinctions

WORK RELATIVE VALUE UNITS (wRVUs) & COMPONENTS

Work RVU Breakdown (2025)

RVU Conversion to Dollar Amount (2025)

GLOBAL PERIOD

DOCUMENTATION REQUIREMENTS FOR 13131

Minimum Documentation Components

BILLING RULES & MODIFIERS

Global Period Coverage

Common Modifiers

MEDICARE RULES FOR 13131

CMS-Specific Rules & Policies

LOCAL COVERAGE DETERMINATIONS (LCDs) & NATIONAL COVERAGE

National Coverage Determination (NCD)

Local Coverage Determinations (LCDs) - MAC-Specific

2025 REIMBURSEMENT INFORMATION

Medicare 2025 Fee Schedule

Year-Over-Year Comparison (2024 vs 2025)

Commercial Insurance & Medicaid Reimbursement (2025)

COMPARISON TO RELATED CODES

Laceration Repair Code Families

FREQUENTLY BILLED SCENARIOS FOR 13131

Scenario 1: Laceration from Motor Vehicle Accident

Scenario 2: Animal Bite with Tissue Damage

Scenario 3: E/M + Wound Repair (ED Setting)

DOCUMENTATION TIPS FOR 13131

What to Document

Sample Documentation Template

AUDIT DEFENSE CHECKLIST FOR 13131

RED FLAGS FOR AUDITORS

FREQUENTLY ASKED QUESTIONS (FAQs)

REAL-WORLD BILLING TIPS

Tips to Maximize Compliance & Revenue

BILLING & CODING RESOURCES

SUMMARY TABLE

Graph View

Table of Contents

Recent Notes

Last Updated: February 2026
Status: 2025 Medicare Fee Schedule Compliant
Specialty Tags: