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S05.01XA

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S05.01XA - Injury of Conjunctiva and Corneal Abrasion Without Foreign Body, Right Eye, Initial Encounter

Short Description

S05.01XA is used for injury of the conjunctiva and corneal abrasion WITHOUT foreign body in the RIGHT eye, initial encounter. This code applies when a patient presents with superficial trauma to the corneal epithelium and/or conjunctiva of the right eye, and the patient is receiving active treatment for this acute injury.

Key points: This is a 7-character code (7th character A = initial encounter) indicating RIGHT eye laterality, no retained foreign body present, and active management phase.

Full Description & Clinical Context

Corneal abrasion is a scratch or defect in the corneal epithelium caused by mechanical trauma, resulting from foreign bodies (which are removed), contact lenses, fingernails, chemicals, or any object causing superficial corneal damage.Conjunctival injury involves trauma to the conjunctiva (the clear membrane covering the white of the eye and inner eyelid). S05.01XA specifically indicates:

  • Injury involving BOTH conjunctiva and corneal abrasion (or either structure)
  • RIGHT eye affected
  • NO foreign body currently present in the eye (excludes T15.0 for foreign body in cornea, T15.1 for foreign body in conjunctival sac)
  • Initial encounter - patient is under active treatment for this acute injury

Clinical presentation:

  • Sharp or foreign body sensation in the eye
  • Tearing, photophobia (light sensitivity)
  • Redness, pain, blurred vision
  • Difficulty opening the affected eye
  • History of trauma (fingernail scratch, contact lens overwear, foreign object that was removed, etc.)

Diagnosis confirmed by:

  • Slit lamp examination with fluorescein staining showing epithelial defect
  • Visual inspection showing conjunctival injection, abrasion, or small hemorrhage
  • No foreign body visible or present upon examination

Code Details

  • Code set: ICD-10-CM
  • Full code: S05.01XA
  • Description: Injury of conjunctiva and corneal abrasion without foreign body, right eye, initial encounter
  • Parent code: S05.01 - Injury of conjunctiva and corneal abrasion without foreign body, right eye (requires 7th character)
  • Code type: Billable/specific diagnosis code
  • Clinical classification: Superficial injury; contusion, initial encounter (CCSR INJ017)

7th Character Options for S05.01:

  • S05.01XA - Initial encounter (active treatment) ← YOU ARE HERE
  • S05.01XD - Subsequent encounter (follow-up/healing phase)
  • S05.01XS - Sequela (late effects)

Excludes1 (at S05.0 level):

  • Foreign body in conjunctival sac (T15.1)
  • Foreign body in cornea (T15.0)

Excludes2 (at S05 level):

  • 2nd cranial [optic] nerve injury (S04.0-)
  • 3rd cranial [oculomotor] nerve injury (S04.1-)
  • Open wound of eyelid and periocular area (S01.1-)
  • Orbital bone fracture (S02.1-, S02.3-, S02.8-)
  • Superficial injury of eyelid (S00.1-S00.2)

Includes (at S05 level):

  • Open wound of eye and orbit

Complete S05.0 Family - Corneal Abrasion & Conjunctival Injury Codes

Laterality and Encounter Status:

CodeDescriptionEyeEncounter
S05.01XAInjury of conjunctiva and corneal abrasion w/o FB, right eye, initialRightInitial (active treatment) ← YOU ARE HERE
S05.01XDInjury of conjunctiva and corneal abrasion w/o FB, right eye, subsequentRightSubsequent (follow-up)
S05.01XSInjury of conjunctiva and corneal abrasion w/o FB, right eye, sequelaRightSequela (late effect)
S05.02XAInjury of conjunctiva and corneal abrasion w/o FB, LEFT eye, initialLeftInitial
S05.02XDInjury of conjunctiva and corneal abrasion w/o FB, left eye, subsequentLeftSubsequent
S05.02XSInjury of conjunctiva and corneal abrasion w/o FB, left eye, sequelaLeftSequela

Critical distinction: S05.01 = RIGHT eye, S05.02 = LEFT eye

S05.01XA vs S05.02XA (Laterality)

Most critical distinction for coding accuracy:

FeatureS05.01XA (RIGHT eye)S05.02XA (LEFT eye)
Eye affectedRight eyeLeft eye
Everything elseIdentical clinical criteriaIdentical clinical criteria
Common errorCoding left when right is documentedCoding right when left is documented

Coding rule: ALWAYS verify laterality in documentation - coding the wrong eye is a significant compliance issue.

When to Use S05.01XA

Use S05.01XA when ALL of the following are true:

  1. RIGHT eye is affected (not left, not bilateral)

    • Documentation clearly states “right eye,” “OD,” “RE”

  2. Corneal abrasion and/or conjunctival injury documented:

    • Fluorescein staining shows epithelial defect
    • Conjunctival injection, abrasion, or small hemorrhage
    • Provider diagnosis: “corneal abrasion,” “corneal epithelial defect,” “conjunctival injury”

  3. NO foreign body present:

    • If foreign body was removed → still use S05.01XA (FB no longer present)
    • If foreign body REMAINS in eye → use T15.0 (cornea) or T15.1 (conjunctival sac) instead

  4. This is the INITIAL encounter:

    • Patient is receiving active treatment for this acute injury
    • May be first visit or subsequent visit if still under active treatment
    • “Initial encounter” ≠ necessarily first visit; it = active treatment phase

Typical scenarios:

  • ED visit for fingernail scratch to right eye
  • Urgent care visit for contact lens-related corneal abrasion, right eye
  • Ophthalmology/optometry office visit for right eye foreign body (removed) with resulting abrasion
  • Sports injury causing right eye corneal abrasion
  • Occupational injury to right eye without retained foreign body

When NOT to Use S05.01XA

Do NOT use S05.01XA when:

ScenarioUse InsteadWhy
LEFT eye affectedS05.02XAWrong laterality
Bilateral (both eyes) affectedS05.01XA + S05.02XACode each eye separately
Foreign body RETAINED in corneaT15.0Excludes1
Foreign body RETAINED in conjunctival sacT15.1Excludes1
Follow-up visit, healing phaseS05.01XDSubsequent encounter
Late effects/sequelaS05.01XSSequela encounter
Eyelid injury only (no cornea/conjunctiva)S00.1-S00.2 or S01.1-Different anatomic site
Deeper penetrating eye injuryS05.5-, S05.6-Open wound/rupture codes

Critical rule: If foreign body is still in the eye → use T15.x, NOT S05.01XA.

Documentation Requirements for S05.01XA

MINIMUM documentation needed:

✅ MUST include:

  1. Explicit diagnosis:

    • “Corneal abrasion, right eye”
    • “Conjunctival injury, right eye”
    • “Corneal epithelial defect, OD”
    • “Corneal abrasion and conjunctival injection, right eye”

  2. Laterality clearly stated:

    • “Right eye,” “OD,” “RE” documented
    • Cannot assume - must be explicitly stated

  3. Absence of foreign body:

    • “No foreign body present”
    • “Foreign body removed, corneal abrasion remains”
    • If FB removed, document removal

  4. This is active treatment (initial encounter):

    • Acute injury under current management
    • Not just routine follow-up

✅ SHOULD document (best practice):

  • Mechanism of injury (fingernail, contact lens, foreign object, chemical, etc.)
  • Visual acuity (before and after treatment if applicable)
  • Slit lamp examination findings with fluorescein staining results
  • Size/location of abrasion (e.g., “2mm central corneal abrasion”)
  • Depth of injury (superficial vs involving Bowman’s membrane)
  • Associated symptoms (photophobia, tearing, pain level)
  • Treatment provided (antibiotic drops, patching, cycloplegic, pain management)
  • Follow-up plan and expected healing time
  • Safety instructions (no contact lens wear, eye protection, return precautions)

External Cause Codes (W and Y Codes)

ICD-10-CM encourages use of external cause codes to document how, where, and during what activity the injury occurred.

Common external cause code pairings with S05.01XA:

Mechanism of Injury (W codes)

  • W21.05XA - Struck by basketball, initial encounter
  • W27.8XXA - Contact with other nonpowered hand tool, initial encounter
  • W45.8XXA - Other foreign body or object entering through skin, initial encounter
  • W50.0XXA - Accidental hit or strike by another person, initial encounter
  • W59.89XA - Other contact with other nonvenomous reptiles (e.g., playing with pet), initial encounter

Place of Occurrence (Y92 codes)

  • Y92.012 - Bathroom of single-family (private) house
  • Y92.017 - Garden or yard in single-family house
  • Y92.310 - Basketball court
  • Y92.63 - Swimming pool
  • Y93.21 - Industrial and construction area

Activity Codes (Y93 codes)

  • Y93.67 - Activity, basketball
  • Y93.k9 - Activity, playing with animals
  • Y93.E1 - Activity, computer keyboarding and other electronic device use
  • Y93.81 - Activity, refereeing a sports activity and game

Note: Many payers don’t require W/Y codes, but they provide valuable epidemiologic data and are considered best practice.

HCC Information

  • S05.01XA does NOT map to a CMS-HCC - acute injury/trauma code
  • No direct HCC weight or RAF score impact
  • Used for documentation of acute injury event

Note:

Chronic sequelae (S05.01XS) also do not map to HCC, but underlying chronic conditions (diabetes, immunosuppression) that complicate healing should be coded separately.

RVU / wRVU Information

  • ICD-10-CM codes (including S05.01XA) do NOT carry RVUs or wRVUs
  • RVUs apply to CPT codes for services rendered
  • S05.01XA supports medical necessity for:
    • Eye E/M services
    • Slit lamp examination
    • Foreign body removal (if applicable)
    • Treatment and follow-up

Common CPT Codes Used with S05.01XA

E/M Services:

  • 99281-99285 - Emergency department visits
  • 99202-99215 - Office/outpatient E/M (ophthalmology, optometry, urgent care)
  • 92002, 92004 - Ophthalmologic medical exam and evaluation (new patient)
  • 92012, 92014 - Ophthalmologic medical exam and evaluation (established patient)

Eye-Specific Examinations:

  • 92250 - Fundus photography with interpretation and report
  • S0620 - Routine ophthalmological examination including refraction; new patient (may vary by payer)
  • S0621 - Routine ophthalmological examination including refraction; established patient (may vary by payer)

Foreign Body Removal (if applicable before abrasion diagnosis):

  • 65205 - Removal of foreign body, external eye; conjunctival superficial
  • 65220 - Removal of foreign body, external eye; corneal, without slit lamp
  • 65222 - Removal of foreign body, external eye; corneal, with slit lamp

Diagnostic Procedures:

  • 92285 - External ocular photography with interpretation and report for documentation of medical progress
  • Slit lamp exam is typically included in E/M eye exam codes

Treatment/Therapeutic Procedures:

  • 65426 - Excision or transposition of pterygium; with graft (if complicated)
  • Medication administration codes (if applicable for in-office treatment)

Common Associated ICD-10-CM Codes

Use ADDITIONAL codes to identify:

Bilateral Involvement

  • S05.02XA - Injury of conjunctiva and corneal abrasion without FB, LEFT eye, initial (if both eyes injured)
  • H16.0x - Corneal ulcer (if develops as complication)
  • H10.x - Conjunctivitis (if infectious complication)
  • H57.1x - Ocular pain (symptom code if significant)
  • H53.139 - Sudden visual loss, unspecified eye (if applicable)

Foreign Body Codes (if applicable)

  • T15.00XA - Foreign body in cornea, unspecified eye, initial encounter (if FB still present)
  • T15.01XA - Foreign body in cornea, right eye, initial encounter
  • T15.10XA - Foreign body in conjunctival sac, unspecified eye, initial
  • T15.11XA - Foreign body in conjunctival sac, right eye, initial

Complications/Associated Conditions

  • Z87.820 - Personal history of traumatic brain injury (if associated head trauma)
  • Z79.4 - Long-term (current) use of insulin (if diabetic and delayed healing concern)

External Cause Codes (mechanism, place, activity)

  • W codes - Mechanism of injury
  • Y92 codes - Place of occurrence
  • Y93 codes - Activity at time of injury

Clinical Examples: When to Use S05.01XA

✅ Example 1 - Contact Lens Overwear Abrasion, Right Eye

SCENARIO:
28-year-old presents to urgent care with right eye pain and photophobia.

History:
- Slept in contact lenses for 3 nights
- Woke this morning with severe pain in right eye
- Cannot tolerate light, tearing profusely
- Removed contact lens but pain persists

Exam:
- VA: 20/40 OD (right eye), 20/20 OS (left eye)
- Slit lamp with fluorescein: 4mm central corneal abrasion, right eye
- No foreign body present
- Conjunctival injection present
- Left eye normal

Treatment:
- Antibiotic drops (erythromycin ophthalmic ointment)
- Cycloplegic drops for comfort
- Pain management (oral analgesic)
- D/C contact lens wear until healed
- Follow-up in 2 days

Assessment:
- Corneal abrasion, right eye, secondary to contact lens overwear

CODES:
- **S05.01XA** - Injury of conjunctiva and corneal abrasion without FB, right eye, initial encounter ✓
- External cause: Contact lens-related (per documentation)

RATIONALE:
├─ Right eye affected (laterality clear)
├─ Corneal abrasion confirmed by fluorescein staining
├─ No foreign body present
├─ Initial encounter (active treatment)
└─ Conjunctival injection also present

✅ Example 2 - Fingernail Scratch, Right Eye

SCENARIO:
2-year-old brought to pediatric ED after sibling scratched right eye.

History:
- Playing with older sibling 1 hour ago
- Sibling's fingernail scratched right eye
- Constant tearing and won't open eye

Exam:
- Very irritable, holding right eye closed
- Slit lamp exam (challenging but completed): Linear 2mm corneal abrasion, right eye
- Small conjunctival abrasion at limbus
- No foreign body
- Left eye completely normal

Treatment:
- Antibiotic ointment applied
- Parent education on eye hygiene and medication administration
- Follow-up with pediatric ophthalmology in 24 hours

Assessment:
- Traumatic corneal and conjunctival abrasion, right eye

CODES:
- **S05.01XA** - Injury of conjunctiva and corneal abrasion without FB, right eye, initial ✓
- **W50.0XXA** - Accidental hit or strike by another person, initial encounter
- **Y92.009** - Unspecified place in unspecified non-institutional residence

RATIONALE:
├─ Right eye documented
├─ Both corneal and conjunctival abrasion present
├─ Foreign body absent
├─ Initial encounter in ED
└─ External cause codes add specificity

✅ Example 3 - Metal Shaving Removed, Abrasion Remains, Right Eye

SCENARIO:
45-year-old construction worker presents to ophthalmology after metal shaving removal.

History:
- Grinding metal 2 hours ago, felt something in right eye
- Went to urgent care, small metal foreign body removed from cornea
- Referred to ophthalmology for evaluation and treatment
- Now presents to ophthalmology office same day

Exam:
- VA: 20/30 OD, 20/20 OS
- Slit lamp: 3mm corneal abrasion where FB was removed, right eye
- Small rust ring noted at abrasion site
- NO foreign body currently present (was removed at urgent care)
- Left eye normal

Treatment:
- Rust ring removal with burr
- Antibiotic/steroid drops prescribed
- Pressure patch applied
- Follow-up in 1 day

Assessment:
- Corneal abrasion, right eye, status post foreign body removal
- Corneal rust ring, right eye (treated today)

CODES:
- **S05.01XA** - Injury of conjunctiva and corneal abrasion without FB, right eye, initial ✓
- External cause: W31.xxx (contact with machinery) or occupational injury code
- Y92.21 - Industrial and construction area

RATIONALE:
├─ Foreign body was REMOVED, no longer present
├─ Corneal abrasion remains after FB removal
├─ Right eye specified
├─ Still initial encounter (active treatment continues)
├─ Use S05.01XA, NOT T15.01XA (FB no longer in eye)
└─ Note: Some coders might consider this subsequent to the UC visit,
    but if the ophthalmologist is providing definitive active treatment
    (rust ring removal), "A" is still appropriate per guidelines

❌ Example 4 - WRONG: Left Eye Coded as Right

SCENARIO:
Documentation states: "Corneal abrasion, LEFT eye, without foreign body."

WRONG CODE: S05.01XA (right eye)
CORRECT CODE: S05.02XA (left eye)

WHY:
├─ Laterality is CRITICAL for eye codes
├─ S05.01 = RIGHT eye
├─ S05.02 = LEFT eye
├─ Coding wrong eye is a major compliance error
└─ Always verify laterality matches documentation

❌ Example 5 - WRONG: Foreign Body Still Present

SCENARIO:
Documentation: "Foreign body embedded in cornea, right eye. Unable to remove
in office, referred to ophthalmology."

WRONG CODE: S05.01XA
CORRECT CODE: T15.01XA (Foreign body in cornea, right eye, initial encounter)

WHY:
├─ Foreign body is STILL PRESENT in the eye
├─ Excludes1 note: FB in cornea = T15.0
├─ S05.01XA is ONLY when no FB present
├─ Even if abrasion is also present, primary code is T15.01XA
└─ After FB removal, THEN use S05.01XA for resulting abrasion

❌ Example 6 - WRONG: Using “A” for Follow-Up Visit

SCENARIO:
Patient returns 3 days after initial corneal abrasion diagnosis.
Abrasion is healing well, re-epithelializing nicely.
Visit is only for routine follow-up check.

WRONG CODE: S05.01XA (initial encounter)
CORRECT CODE: S05.01XD (subsequent encounter)

WHY:
├─ This is a FOLLOW-UP visit for healing injury
├─ Not active treatment phase (routine monitoring)
├─ "Initial encounter" has ended
├─ Subsequent encounter (D) is appropriate
└─ "A" should only be used during active treatment phase

Documentation Best Practices (Provider-Friendly Template)

CHIEF COMPLAINT:
Right eye pain and foreign body sensation

HISTORY OF PRESENT ILLNESS:
[Age]-year-old [gender] presents with [onset] of right eye pain and
sensation of something in the eye. Mechanism: [fingernail scratch/
contact lens/foreign object/chemical exposure/other]. No prior 
similar episodes. [Associated symptoms: tearing, photophobia, 
blurred vision, discharge].

PAST OCULAR HISTORY:
Contact lens wearer: [Yes/No]
Prior eye injuries: [Yes/No]
Prior eye surgeries: [Yes/No]

MEDICATIONS: [List]

ALLERGIES: [List]

EXAMINATION:
Visual Acuity:
- OD (right eye): [measurement]
- OS (left eye): [measurement]

External Exam:
- OD: [Describe periocular findings, lids, lashes]
- OS: Normal

Slit Lamp Examination:
- OD:
  - Cornea: [Size, location, depth] epithelial defect with fluorescein uptake
    Example: "3mm central corneal abrasion with fluorescein staining"
  - Conjunctiva: [Injection, hemorrhage, abrasion if present]
  - Anterior chamber: [Depth, cells, flare if applicable]
  - Foreign body: NONE present / Foreign body removed [describe]
- OS: Normal examination

ASSESSMENT:
1. Corneal abrasion, right eye, without foreign body
   [Additional: Conjunctival injury/abrasion if present]
2. [Mechanism of injury]

PLAN:
1. Topical antibiotic: [Medication, frequency]
2. Cycloplegic agent: [If prescribed]
3. Pain management: [NSAID drops, oral analgesic]
4. Eye protection: Avoid rubbing, protective eyewear if needed
5. Contact lens: Discontinue until healed (if applicable)
6. Follow-up: [Timeframe] or sooner if symptoms worsen
7. Return precautions: Worsening pain, vision changes, discharge

CODING DIAGNOSIS:
- S05.01XA - Injury of conjunctiva and corneal abrasion without
  foreign body, right eye, initial encounter
- [External cause codes if applicable]

Compliance Checklist

Before coding S05.01XA, verify:

  • RIGHT eye is documented (not left, not bilateral)
  • Corneal abrasion and/or conjunctival injury explicitly stated
  • Diagnosis confirmed by examination (fluorescein staining, slit lamp)
  • NO foreign body present (or foreign body was removed)
    • If FB remains → use T15.0x or T15.1x, NOT S05.01XA
  • This is initial encounter (active treatment phase)
    • Not routine follow-up → use S05.01XD for subsequent
  • Visual acuity documented
  • Treatment plan documented
  • Consider external cause codes (W, Y92, Y93) when appropriate
  • If bilateral injury, code BOTH S05.01XA (right) AND S05.02XA (left)

Quick Reference Card

ICD-10-CM S05.01XA - CORNEAL ABRASION & CONJUNCTIVAL INJURY, RIGHT EYE, INITIAL
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
USE WHEN:
• RIGHT eye affected (OD/RE)
• Corneal abrasion and/or conjunctival injury documented
• Fluorescein staining confirms epithelial defect
• NO foreign body currently present in eye
• Initial encounter (active treatment phase)
 
7TH CHARACTERS:
• S05.01XA - Initial encounter (active treatment) ← YOU ARE HERE
• S05.01XD - Subsequent encounter (follow-up, healing)
• S05.01XS - Sequela (late effects)
 
LATERALITY:
• S05.01XA = RIGHT eye
• S05.02XA = LEFT eye
• If bilateral → code BOTH
 
DO NOT USE S05.01XA FOR:
• LEFT eye → S05.02XA
• Foreign body STILL IN eye → T15.01XA (cornea) or T15.11XA (conjunctiva)
• Follow-up visit → S05.01XD
• Eyelid injury only → S00.x or S01.x
• Deeper penetrating injury → S05.5x, S05.6x
 
CRITICAL EXCLUDES:
• Foreign body in cornea (T15.0) - Excludes1
• Foreign body in conjunctival sac (T15.1) - Excludes1
  ➜ If FB present, use T15.x codes, NOT S05.01XA
 
PAIR WITH:
• External cause codes (W, Y92, Y93) for mechanism, place, activity
• S05.02XA if bilateral injury
• Symptom codes (H57.1 pain, H53.x vision changes) if needed
 
COMMON CPT CODES:
• 99281-99285 - ED visits
• 92002, 92004, 92012, 92014 - Eye E/M
• 65205, 65220, 65222 - FB removal (if applicable before abrasion dx)
 
HCC: None (acute injury)
RVU: None (diagnosis code)
 
DOCUMENTATION MUST STATE:
✓ "Right eye" or "OD" or "RE"
✓ "Corneal abrasion" or "corneal epithelial defect"
✓ "No foreign body present" (or "FB removed")
✓ Fluorescein staining results
✓ Treatment plan
 
BOTTOM LINE:
S05.01XA = Corneal/conjunctival injury, RIGHT eye,
NO foreign body, INITIAL encounter.
Always verify laterality.
If FB present → T15.x, not S05.01XA.

ICD-9-CM Crosswalk (Historical Reference)

S05.01XA maps to (approximate):

  • 918.1 - Superficial injury of cornea (approximate)
  • 918.2 - Superficial injury of conjunctiva (approximate)

Note: ICD-9 codes are for reference only; all current coding uses ICD-10-CM.

Last Updated: February 10, 2026
For coding reference only - always verify against current ICD-10-CM, official guidelines, payer policies, and ophthalmology billing standards.

Key Concept: S05.01XA is for acute corneal abrasion and/or conjunctival injury of the RIGHT eye without a foreign body present, during the initial encounter/active treatment phase. The most critical elements are: (1) correct laterality (right vs left), (2) absence of foreign body (if FB present → use T15.x codes instead), and (3) appropriate encounter status (A=initial active treatment, D=subsequent follow-up, S=sequela). This code requires a 7-character format and should be paired with external cause codes when appropriate for complete documentation.

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