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L89.622

Properties3
codeL89.622
code_titlePressure ulcer of left heel, stage 2
statusActive ✅

25 min read

🧬 ICD-10 CM L89.622 — Pressure Ulcer of Left Heel, Stage 2

Billable Code Confirmed

ICD-10 CM L89.622 is a fully specified, 6-character ICD-10-CM code valid for FY2026 reporting. The fifth character “2” designates left-side laterality within the heel subcategory L89.62, and the sixth character “2” specifies stage 2 severity, satisfying all ICD-10-CM requirements for site, laterality, and staging. This level of code specificity is required for claim submission and cannot be substituted with a parent or unspecified code.

Non-Billable Parent Codes

L89.62 — Pressure ulcer of left heel is a 5-character non-billable subcategory that specifies site and laterality but omits the required staging character; it cannot be submitted for reimbursement and must be expanded to the appropriate 6-character code. L89.6 — Pressure ulcer of heel is a 4-character non-billable category code that lacks both laterality and staging specificity; it functions only as a hierarchical classification anchor and is never a valid reportable code. L89 — Pressure ulcer is the 3-character non-billable root category requiring full 6-character expansion across all pressure ulcer coding assignments regardless of site or severity.

Clinical Context

ICD-10 CM L89.622 is selected when provider or wound care documentation specifically identifies a pressure injury of the left heel at stage 2, characterized by partial-thickness loss of the dermis presenting as a shallow open ulcer with a pink or red wound bed — without slough or eschar — or as an intact or ruptured serum-filled blister. Accurate stage documentation in physician orders, wound care notes, or provider-authenticated nursing assessments is required to support this code over unspecified, unstageable, or adjacent-stage assignments.

Code Classification

ICD-10 CM L89.622 is an ICD-10-CM diagnosis code classifying a pressure-induced integumentary injury; it is not a procedure code. Wound debridement, negative pressure wound therapy, and skin grafting are reported separately using ICD-10-PCS for inpatient facility coding or CPT for outpatient and professional fee billing.

🔍 Code Description

ICD-10 CM L89.622 describes a stage 2 pressure ulcer of the left heel — a wound resulting from prolonged or intense mechanical pressure, shear, or friction applied to the skin and soft tissue overlying the calcaneal bony prominence on the left side.1 At stage 2, the wound exhibits partial-thickness skin loss involving the epidermis and part of the dermis, appearing as a shallow open ulcer with a pink or red wound bed without slough or eschar; alternatively, the stage 2 presentation may include an intact or ruptured serum-filled or serosanguineous blister over a pressure-prone area.2 This staging is clinically distinct from L89.621 (stage 1), where the skin remains intact with only non-blanchable erythema, and from L89.623 (stage 3), where full-thickness skin loss with visible subcutaneous fat has occurred. The heel is among the highest-risk anatomic sites for pressure injury development due to the limited soft-tissue cushion over the calcaneus and the common positioning of immobile patients with heels in direct contact with mattress surfaces.3

Pressure ulcer development at this site is strongly associated with immobility, peripheral vascular disease, diabetic neuropathy, malnutrition, and prolonged moisture exposure — all of which compound the tissue ischemia driving ulcer formation and progression.4 Inpatient coders must verify the wound stage in the most current wound care or nursing documentation, as stage 2 pressure ulcers may evolve during hospitalization and require code reassignment to L89.623 or L89.624 per ICD-10-CM Official Guidelines mandating that the highest stage documented during the entire stay be reported at discharge.1 Associated comorbidities frequently seen alongside L89.622 — including E43 (severe protein-calorie malnutrition), I73.9 (peripheral vascular disease), and L03.116 (cellulitis of the left foot) — should each be captured with additional codes when documented and clinically relevant to the encounter.

🌳 Code Tree / Hierarchy

L89 — Pressure ulcer ❌ Non-billable
│
├── L89.0 — Pressure ulcer of elbow ❌ Non-billable
├── L89.2 — Pressure ulcer of hip ❌ Non-billable
│
├── L89.6 — Pressure ulcer of heel ❌ Non-billable
│   │
│   ├── L89.60 — Pressure ulcer of unspecified heel ❌ Non-billable
│   │
│   ├── L89.61 — Pressure ulcer of right heel ❌ Non-billable
│   │   ├── L89.610 — Pressure ulcer of right heel, unstageable ✅ Billable
│   │   ├── L89.611 — Pressure ulcer of right heel, stage 1 ✅ Billable
│   │   ├── L89.612 — Pressure ulcer of right heel, stage 2 ✅ Billable
│   │   ├── L89.613 — Pressure ulcer of right heel, stage 3 ✅ Billable
│   │   └── L89.614 — Pressure ulcer of right heel, stage 4 ✅ Billable
│   │
│   └── L89.62 — Pressure ulcer of left heel ❌ Non-billable
│       ├── L89.620 — Pressure ulcer of left heel, unstageable ✅ Billable
│       ├── L89.621 — Pressure ulcer of left heel, stage 1 ✅ Billable
│       ├── L89.622 — Pressure ulcer of left heel, stage 2 ◀ THIS CODE ✅ Billable
│       ├── L89.623 — Pressure ulcer of left heel, stage 3 ✅ Billable
│       ├── L89.624 — Pressure ulcer of left heel, stage 4 ✅ Billable
│       └── L89.626 — Pressure-induced deep tissue damage of left heel ✅ Billable
│
└── L89.9 — Pressure ulcer of unspecified site ❌ Non-billable

Why Stage Specificity Has Direct Financial Consequences

Selecting L89.622 instead of remaining at parent L89.62 is required for claim submission, but the staging character also determines DRG CC/MCC designation and **HAC 14 eligibility — making stage documentation accuracy a direct reimbursement and compliance issue, not merely a code specificity preference.

Tip

The heel (L89.6x) is classified separately from the ankle (L89.5x) in ICD-10-CM; do not use a heel pressure ulcer code for wounds documented over the lateral malleolus, medial malleolus, or Achilles tendon, as those anatomic sites map to the ankle subcategory L89.5x and require distinct code selection with different laterality characters.

✅ Includes

ICD-10 CM L89.622 includes the following clinical presentations when documented for the left heel at stage 2 caused by sustained pressure or shear:

  • Decubitus ulcer of the left heel, stage 2 — the legacy clinical term “decubitus ulcer” maps directly to the pressure ulcer classification and is indexed to L89.622 when left heel site and stage 2 are specified by the provider.
  • Stage II pressure injury, left heel — current NPIAP terminology using “pressure injury” instead of “pressure ulcer” is indexed identically in ICD-10-CM for coding purposes.2
  • Serum-filled blister of the left heel secondary to pressure — intact or ruptured serum-filled blisters over a calcaneal bony prominence resulting from pressure or shear are classified at stage 2 when the wound bed is not obscured by slough or eschar.
  • Partial-thickness pressure wound of the left heel — provider documentation using “partial-thickness” in the context of pressure or shear injury of the left heel supports stage 2 assignment when dermis is exposed but no deeper tissue loss into subcutaneous fat is present.

❌ Excludes

Excludes 1

ICD-10 CM E08.621-E13.622 — Diabetic ulcers with peripheral angiopathy or other skin ulcer: These codes are mutually exclusive with L89.622 because the coding etiology is diabetic vascular or neuropathic disease rather than mechanical pressure. If a patient with documented Type 2 diabetes has a left heel ulcer that is clinically pressure-driven, L89.622 is the appropriate code and the E-series diabetic ulcer codes should not be assigned to the same wound; dual-coding an E08-E13 ulcer code alongside L89.622 for a single wound is an Excludes 1 violation that will generate audit risk.1

L97.- — Non-pressure chronic ulcer of skin: L97 codes describe chronic heel and midfoot ulcers of vascular, arterial, or neuropathic etiology — not pressure-driven — and are mutually exclusive with L89.622 for the same wound. When heel ulcer etiology is undocumented or ambiguous, a CDI query is required before code assignment, as the coder cannot assume pressure as the cause and default to L89.622 without documentation support; L97.421-L97.429 represent the correct alternative family when a non-pressure left heel ulcer is confirmed.1

ICD-10 CM I83.0- -I83.2 — Varicose veins with ulcer: Varicose stasis ulcers of the lower extremity are classified by venous etiology and are mutually exclusive with pressure ulcer coding; a venous stasis ulcer of the heel cannot be dual-coded under both L89.622 and I83.x for the same wound regardless of anatomic overlap with a pressure-prone area.

Danger

The most common Excludes 1 error with L89.622 is assigning it to a left heel wound in a diabetic patient without confirming the documented primary etiology. If the physician documents “diabetic foot ulcer” or “neuropathic ulcer of the heel,” the correct code is from the E08-E13 ulcer complication series with an additional site code — not L89.622 — even when the patient is also immobile and the wound is anatomically over the calcaneus.

Excludes 2

ICD-10 CM N89.8 — Other specified noninflammatory disorders of vagina: This code covers pressure ulcers of the vagina, which can coexist with and be separately reported alongside L89.622 when both conditions are documented and clinically present in the same encounter. This is one of the few Excludes 2 scenarios where an L89 family code and N89.8 may legitimately appear together on the same claim.

📋 Clinical Overview

Pressure Ulcer Staging — Left Heel: Clinical and Coding Differentiation

Accurate stage assignment for left heel pressure ulcers is one of the most impactful inpatient coding decisions within the L89 family because staging drives DRG weight, CC/MCC designation, HAC eligibility, and HCC capture simultaneously. The three most clinically confused stages in inpatient practice are stage 1, 2, and 3, differing primarily in depth of tissue involvement, wound bed appearance, and skin integrity — distinctions that must be confirmed through provider or wound care specialist documentation rather than inferred from nursing observation alone. Coders should treat any documentation using the phrases “blister,” “partial-thickness,” or “erythema with skin break” as a stage 2 CDI trigger until the provider explicitly confirms staging.

FeatureL89.622 Stage 2L89.621 Stage 1L89.623 Stage 3
Skin IntegrityPartial-thickness loss; dermis exposed; blister may be presentIntact skin; no skin breakFull-thickness skin loss; subcutaneous fat visible
Wound BedShallow open wound with pink/red bed; or intact/ruptured serum-filled blister; no slough or escharNon-blanchable erythema; localized discoloration or temperature change; skin remains intactSlough or eschar may be present; subcutaneous fat visible; bone, tendon, and muscle not exposed
DepthSuperficial — epidermis and partial dermis involvedEpidermis intact — superficial tissue changes onlyFull-thickness — dermis through subcutaneous layer
DRG Designation (Secondary Dx)CC — upgrades base DRG to CC tierNo CC/MCC designation — no DRG weight impact as secondaryMCC — upgrades base DRG to MCC tier
HAC Status (CMS HAC #14)Not HAC-listedNot HAC-listedHAC-eligible when hospital-acquired
HCC Mapping (V28)Not HCC-mappedNot HCC-mappedHCC 161 — Chronic Ulcer of Skin (stage 3 and 4 only)
CDI Query Trigger”Blister” or “partial-thickness wound” without explicit staging; stage not documented by providerNon-blanchable erythema on nursing skin assessment without provider stage assignmentVisible fat in wound bed; wound deterioration notes; slough present without staging

Important

When nursing documentation describes a “serum-filled blister” or “partial-thickness wound” over the left heel in a pressure-exposed patient but the provider has not formally staged the wound, a CDI query must be initiated to confirm stage 2 designation before code assignment. Assigning L89.622 based on nursing documentation alone — without provider authentication of the stage — is a documentation insufficiency that exposes the facility to audit recoupment risk.

Manifestations & Symptom Burden

ICD-10 CM L89.622 may present with associated clinical features generating additional reportable diagnosis codes when documented:

  • Wound pain (G89.29 — Other chronic pain): Stage 2 pressure ulcers are typically painful; when pain management is a documented part of the treatment plan, an additional chronic pain code may be separately reportable per guideline direction.
  • Wound infection (specific organism code or L08.89): Stage 2 ulcers with documented superimposed infection require an additional infectious complication code; infection does not change the stage classification but adds coding complexity and may carry its own CC/MCC designation.
  • Malnutrition (E43, E44.0): Nutritional deficiency is a documented major contributing factor to impaired wound healing; when the provider documents malnutrition in the context of the pressure ulcer, it must be captured as an additional diagnosis and carries CC or MCC weight independently.
  • Immobility-causing conditions (hemiplegia, paraplegia, hip fracture): Underlying diagnoses driving the immobility that led to pressure ulcer formation should be captured as additional secondary diagnoses when clinically documented as contributing factors.
  • Moisture-associated skin damage (MASD): Documentation distinguishing MASD from a true pressure injury supports accurate staging; MASD does not qualify as a pressure ulcer under NPIAP definitions and should not be coded to the L89 series.

Tip

Manifestation coding for L89.622 should always capture the underlying cause of immobility when documented, as conditions like paraplegia or severe malnutrition (E43, MCC) carry independent DRG weight that compounds the CC contribution of L89.622 itself, potentially pushing the encounter from DRG 594 all the way to DRG 592 when combined.

💰 HCC Risk Adjustment

FieldDetail
HCC Category (V28)Not HCC-mapped
HCC LabelN/A
RAF Weight0.000 — no RAF contribution
CMS ModelCMS-HCC V28 (effective 2024+)
Annual Recapture RequiredN/A for stage 2; required if progressed to stage 3/4
Payer ImplicationStage 2 does not affect MA risk score; L89.623/L89.624 map to HCC 161

ICD-10 CM L89.622 does not carry an HCC designation under CMS-HCC V28 and contributes zero additional RAF weight to a patient’s composite risk score.5 Coders and CDI specialists should understand that stage 3 (L89.623) and stage 4 (L89.624) left heel pressure ulcers map to HCC 161 (Chronic Ulcer of Skin, Except Pressure) and do carry positive RAF attribution — creating a direct documentation and financial incentive to accurately capture wound stage upgrades before discharge. For Medicare Advantage payers, annual recapture of all active HCC-eligible diagnoses is required under the prospective payment model, meaning patients with documented pressure injury histories should have wound status formally assessed and stage-documented at each qualifying encounter. When a stage 2 wound converts to stage 3 or higher prior to discharge, coders must update the assigned code and flag the change for HCC reporting, particularly for MA-contracted facilities where risk score accuracy is audited retrospectively.

🏥 MS-DRG Assignment

ScenarioDRGTitle
Principal Dx — with MCC592Skin Ulcers with MCC
Principal Dx — with CC593Skin Ulcers with CC
Principal Dx — without CC/MCC594Skin Ulcers without CC/MCC
Secondary Dx roleCCUpgrades base DRG to CC tier when coded as secondary diagnosis

When L89.622 is the principal diagnosis, the encounter groups under MDC 09 to DRG 592, 593, or 594 based on the CC/MCC burden among the remaining secondary diagnoses.6 As a secondary diagnosis, L89.622 carries CC designation, which can shift a base DRG-without-CC/MCC to its CC-weighted equivalent, generating meaningful reimbursement improvement. If wound staging documentation supports upgrading to L89.623 or L89.624, those codes carry MCC weight and push the encounter to DRG 592 — the highest-weighted tier in this DRG family — making stage accuracy the single most impactful coding decision in this scenario. Per ICD-10-CM Official Guidelines Section I.C.12.a, the highest stage documented anywhere in the record during the hospital stay must be reported at discharge, not simply the stage at admission, making ongoing wound reassessment documentation from nursing and wound care specialists essential to accurate final DRG assignment.1 POA indicator assignment for L89.622 must be carefully reviewed: a wound present at admission at stage 2 that progresses inpatient does not trigger **HAC 14 because the wound existed pre-admission, but a pressure ulcer that first develops at stage 3 or higher during the stay does trigger **HAC 14 and carries value-based payment implications.

🔗 Related ICD-10-CM Codes

Group 1 — Left Heel Pressure Ulcer Family (L89.62x)

  • L89.620 — Pressure ulcer of left heel, unstageable: Used when eschar or slough covers the wound bed and prevents clinical staging; carries MCC designation and is HAC-eligible when hospital-acquired; do not use when staging is clinically determinable.
  • L89.621 — Pressure ulcer of left heel, stage 1: Intact skin with non-blanchable erythema; no CC/MCC designation; no HAC eligibility; the lowest-severity billable code in the left heel pressure ulcer staging sequence.
  • L89.622 — Pressure ulcer of left heel, stage 2: This code; partial-thickness skin loss; CC designation as secondary diagnosis; no HAC eligibility; no HCC mapping.
  • L89.623 — Pressure ulcer of left heel, stage 3: Full-thickness skin loss into subcutaneous fat; MCC designation; HAC-eligible when hospital-acquired; maps to HCC 161.
  • L89.624 — Pressure ulcer of left heel, stage 4: Full-thickness tissue loss with exposed bone, tendon, or muscle; MCC designation; HAC-eligible; maps to HCC 161; highest-severity billable stage.
  • L89.626 — Pressure-induced deep tissue damage of left heel: Intact or non-intact skin with deep purple or maroon discoloration not explained by superficial tissue damage; carries MCC designation; may not appear externally severe despite significant underlying tissue destruction.

Group 2 — Related Wound and Comorbidity Codes

  • L97.421 — Non-pressure chronic ulcer of left heel and midfoot limited to breakdown of skin: The Excludes 1 alternative when left heel ulcer etiology is vascular or neuropathic rather than pressure; mutually exclusive with L89.622 for the same wound.
  • L97.422 — Non-pressure chronic ulcer of left heel and midfoot with fat layer exposed: The non-pressure analog to L89.623 in terms of tissue depth; requires confirmed non-pressure etiology.
  • L03.116 — Cellulitis of left foot: Assign in addition to L89.622 when surrounding cellulitis is documented as a complication of or concurrent with the pressure wound; never substitute cellulitis coding for the pressure ulcer itself.
  • E43 — Unspecified severe protein-calorie malnutrition: MCC-designated; frequently associated with non-healing or rapidly progressing pressure ulcers; when documented by the provider as clinically related, significantly impacts DRG weight alongside L89.622.
  • I73.9 — Peripheral vascular disease, unspecified: Commonly documented comorbidity contributing to impaired tissue perfusion and pressure injury susceptibility; code additionally when documented as clinically relevant to the wound.
  • Z87.39 — Personal history of other musculoskeletal disorders: May be relevant when prior lower extremity surgery or injury contributes to immobility and heel exposure risk in the current encounter.

🛠️ Commonly Associated CPT Codes

For outpatient and professional fee settings, the following CPT codes are commonly associated with the evaluation and management of L89.622:

  • 97597 — Debridement, open wound; first 20 sq cm or less (selective): This code applies to active, selective removal of devitalized tissue from a wound surface and is the primary debridement code for stage 2 pressure ulcers undergoing wound bed preparation; documentation must specify wound size in sq cm and confirm selective technique (sharp, enzymatic, or autolytic).7
  • 97598 — Debridement, open wound; each additional 20 sq cm or part thereof: Reported as an add-on to 97597 when the total wound surface area exceeds 20 sq cm; the total measured wound size must be documented to support any additional units billed.7
  • 97602 — Non-selective debridement, open wound; first 20 sq cm or less: Used when wet-to-dry dressings or enzymatic agents perform debridement passively rather than through active selective tissue removal; cannot be billed on the same date of service as 97597 for the same wound under NCCI edits.7,8
  • 11042 — Debridement, subcutaneous tissue (includes epidermis and dermis, if performed); first 20 sq cm or less: Applicable when debridement reaches subcutaneous tissue during management of a stage 2 heel ulcer; surgeon-performed and requires operative note documentation of the tissue layers involved to distinguish it from the wound care series.7
  • 97610 — Low frequency, non-contact, non-thermal ultrasound therapy, including topical application(s), wound assessment, and instruction(s), per day: Used as adjunctive wound healing therapy for pressure ulcers; requires documented medical necessity and is subject to MAC-specific LCD coverage criteria — verify WPS LCD for Jurisdiction 5 prior to billing.7
  • 97606 — Negative pressure wound therapy utilizing durable medical equipment; wound(s) surface area ≥ 50 sq cm: Applicable when NPWT is initiated for a stage 2 left heel ulcer meeting size criteria; wound area must be documented and payer-specific NPWT coverage criteria verified against the applicable LCD before billing.7

NCCI Bundling Considerations

CPT 97597 and 97602 cannot be reported together on the same date of service for the same wound because selective and non-selective debridement are mutually exclusive procedures under NCCI edits — only one debridement methodology can be billed per wound per session.8 11042 is a higher-intensity debridement code than 97597 and replaces rather than accompanies wound care series debridement codes when subcutaneous tissue involvement is documented; coders must review the procedure note for tissue depth language to determine the correct level. When 97610 (ultrasound wound therapy) is reported on the same day as a debridement code, documentation must clearly establish that each procedure was medically necessary, performed separately, and distinctly documented to withstand audit scrutiny under NCCI modifier indicator rules.

🔬 ICD-10-PCS Crosswalk

For inpatient facility coding, the following ICD-10-PCS codes may apply when procedural management of L89.622 is performed:

  • 0HBNXZZ — Excision of Skin, Left Foot, External Approach: This PCS code represents surgical (sharp/selective) debridement of the left heel pressure ulcer, where cutting is used to remove devitalized skin tissue via the external approach; the “Left Foot” body part character in the Skin and Breast body system (0H) encompasses the heel anatomic region, and excision root operation (B) applies when tissue is cut out or off.9
  • 0HDNXZZ — Extraction of Skin, Left Foot, External Approach: Used when debridement is performed by pulling or stripping tissue (extraction root operation D) rather than cutting; this root operation distinction must be matched to the operative documentation describing the specific debridement technique used, as the selection is technique-driven, not severity-driven.9
  • 0HRNXKZ — Replacement of Skin, Left Foot with Nonautologous Tissue Substitute, External Approach: Applicable when a biologic or nonautologous skin substitute graft (device character K) is applied to the left heel wound as a surgical coverage procedure; the operative report must document the specific graft product used to confirm nonautologous (K) versus synthetic (J) or autologous (7) device character selection.9
  • 0HRNXJZ — Replacement of Skin, Left Foot with Synthetic Substitute, External Approach: Used when a synthetic (non-biologic) wound covering or substitute is applied; differentiation between synthetic (J) and nonautologous tissue substitute (K) device characters is determined by the product classification in the ICD-10-PCS device reference table and must reflect the documented graft type.9

💊 Coding Scenarios and Examples

Scenario 1: Established Stage 2 Left Heel Pressure Ulcer Admitted for Wound Infection

A 74-year-old male with a history of CVA-related left hemiplegia and Type 2 diabetes presents for inpatient admission with a 3-week-old stage 2 pressure ulcer of the left heel showing peri-wound cellulitis. The wound care physician documents the ulcer as stage 2, partial-thickness, with surrounding left foot cellulitis. Wound culture is positive for MSSA. The registered dietitian and attending jointly document severe protein-calorie malnutrition.

Correct coding:

  • L03.116 — Cellulitis of left foot (principal — condition chiefly responsible for admission)
  • L89.622 — Pressure ulcer of left heel, stage 2 (secondary, CC)
  • B95.61 — MSSA as the cause of diseases classified elsewhere (secondary)
  • E43 — Unspecified severe protein-calorie malnutrition (secondary, MCC)
  • I69.354 — Hemiplegia and hemiparesis following cerebral infarction affecting left non-dominant side (secondary)
  • E11.9 — Type 2 diabetes mellitus without complications (secondary)

Sequencing explanation: Cellulitis is the condition chiefly responsible for admission and sequences as principal; L89.622 captures the underlying wound as a secondary CC. E43 (MCC) combined with L89.622 (CC) will drive the encounter toward DRG 592 (with MCC) when cellulitis is principal, significantly increasing DRG weight. Note that E11.622 (Type 2 diabetes with other skin ulcer) is NOT coded here because the wound etiology is pressure-driven, not diabetic — dual-coding E11.622 alongside L89.622 for the same wound violates Excludes 1.

CDI Note: If documentation is ambiguous about whether the heel ulcer is pressure-driven or diabetic neuropathic in origin, a CDI query must be submitted to the attending before finalizing code selection, as the answer changes the code family entirely.

Scenario 2: Stage 2 Left Heel Pressure Ulcer Progressing to Stage 3 During Admission

A 68-year-old female admitted for left hip fracture surgery is noted on admission skin assessment to have a stage 2 pressure ulcer of the left heel (POA = Y). Wound care notes on day 4 document progression to stage 3 with visible subcutaneous fat. Wound debridement is performed on day 5.

Correct coding:

  • S72.002A — Fracture of unspecified part of neck of left femur, initial encounter for closed fracture (principal)
  • L89.623 — Pressure ulcer of left heel, stage 3 (secondary, MCC — highest stage documented during stay)
  • 0HBNXZZ — Excision of Skin, Left Foot, External Approach (ICD-10-PCS procedure)

Sequencing explanation: Per ICD-10-CM Official Guidelines Section I.C.12.a, L89.623 — the highest stage documented during the admission — must be reported at discharge, not L89.622 (the stage at admission). The POA indicator for L89.623 is assigned Y because the wound was present at admission (stage 2 is a lower stage of the same wound); this means HAC #14 is NOT triggered, as the wound existed prior to admission regardless of stage at the time of entry. The MCC designation of L89.623 upgrades the encounter’s DRG weight compared to what stage 2 coding would have yielded.

CDI Note: Nursing documentation of “visible fat in the wound bed” alone is a CDI query trigger — the wound care physician or attending must explicitly document and authenticate the stage 3 upgrade before the code can be changed. Without provider confirmation, L89.622 must remain the reported code.

Scenario 3: Stage 2 Left Heel Pressure Ulcer as Principal Diagnosis — Debridement Encounter

An 82-year-old nursing home resident is admitted for management of a stage 2 left heel pressure ulcer requiring debridement and dehydration. Wound care team performs selective debridement, and the stage 2 designation is confirmed and co-signed by the wound care physician. No wound infection is documented.

Correct coding:

  • L89.622 — Pressure ulcer of left heel, stage 2 (principal — condition driving admission)
  • E86.0 — Dehydration (secondary, CC)
  • 0HBNXZZ — Excision of Skin, Left Foot, External Approach (ICD-10-PCS debridement procedure)

Sequencing explanation: When the pressure ulcer management is the primary reason for admission, L89.622 sequences as principal and the encounter groups to DRG 593 (Skin Ulcers with CC) due to E86.0 in the secondary position. The ICD-10-PCS code captures the selective surgical debridement performed during the stay. Coders should confirm the debridement procedure note describes excision of devitalized tissue to support root operation selection (Excision vs. Extraction), as technique documentation determines correct PCS root operation assignment.

⚠️ Coding Pitfalls and Tips

  1. Never default to unspecified staging when staging is documented: When the provider or wound care team documents “stage 2” or “stage II,” assign L89.622 without substituting an unspecified or unstageable code. Querying for staging is appropriate when documentation is absent, but coders must never downgrade an explicitly staged wound to an unspecified code to avoid perceived risk.1

  2. Report the highest stage documented during the entire stay — not just admission: Per ICD-10-CM Official Guidelines Section I.C.12.a, if a stage 2 wound (L89.622) progresses to stage 3 (L89.623) at any point during the hospitalization, stage 3 must be reported at discharge. This is among the most frequently cited inpatient pressure ulcer coding errors in compliance audits and results in systematic DRG undercoding when missed.1

  3. Do not use L89.622 for non-pressure heel ulcers: When the ulcer of the left heel is of vascular, arterial, or neuropathic etiology per provider documentation, the correct code family is L97.421-L97.429 (non-pressure chronic ulcer of left heel and midfoot), not L89. Etiology documentation — not anatomic location or wound appearance alone — determines code family selection, and both families cannot be used simultaneously for the same wound.1

  4. Assigning a diabetic E-code and L89.622 for the same wound is an Excludes 1 violation: When a diabetic patient has a left heel ulcer, confirm primary etiology through provider documentation or CDI query before finalizing coding. Pressure-driven wounds on diabetic patients code to L89.622; diabetic complications driving the wound code to the E08-E13 series. These are not simultaneously reportable for the same ulcer.1

  5. ICD-10 CM L89.622 is a CC — not an MCC — as a secondary diagnosis: Do not assume all pressure ulcer codes carry MCC designation. L89.622 (stage 2) is a CC; L89.623, L89.624, L89.620, and L89.626 carry MCC weight. Misidentifying staging inflates or deflates DRG weight and creates compliance exposure in both directions.6

  6. POA indicator accuracy is essential when staging progresses during the stay: ICD-10 CM L89.622 is not a CMS HAC # 14-listed code, but if the wound is upgraded to L89.623 or L89.624 before discharge, HAC eligibility shifts entirely based on whether the wound was present at admission. A pressure ulcer present at admission at stage 2 that worsens inpatient to stage 3 receives POA = Y (wound was present) and does NOT trigger **HAC 14; a new stage 3 ulcer that develops from intact skin during the hospitalization receives POA = N and DOES trigger **HAC 14 with associated payment implications.6

📚 Sources

1. Centers for Medicare & Medicaid Services. *ICD-10-CM Official Guidelines for Coding and Reporting, FY2026.* Section I.C.12.a — Pressure Ulcer Stages. CMS.gov; 2025. 2. National Pressure Injury Advisory Panel (NPIAP). *Pressure Injury Staging Definitions.* NPIAP; 2016 (revised 2019). Available at: https://npiap.com 3. Wounds International. *International Best Practice Guidelines: Prevention and Management of Pressure Injuries.* Wounds International; 2022. 4. Agency for Healthcare Research and Quality (AHRQ). *Preventing Pressure Ulcers in Hospitals: A Toolkit for Improving Quality of Care.* AHRQ; updated 2014. Available at: https://ahrq.gov 5. Centers for Medicare & Medicaid Services. *2024 Medicare Advantage and Part D CMS-HCC Risk Adjustment Model, V28 Technical Report.* CMS.gov; 2023. 6. Centers for Medicare & Medicaid Services. *MS-DRG Definitions Manual, Version 43.0, FY2026.* MDC 09 — Skin, Subcutaneous Tissue and Breast. CMS.gov; 2025. 7. American Medical Association. *CPT 2026 Professional Edition.* Wound Care Management (97597-97610) and Integumentary (11042). AMA Press; 2025. 8. Centers for Medicare & Medicaid Services. *National Correct Coding Initiative (NCCI) Policy Manual for Medicare Services, FY2026.* Chapter 11 — Wound Care Services. CMS.gov; 2025. 9. Centers for Medicare & Medicaid Services. *ICD-10-PCS Reference Manual and Tables, FY2026.* Body System 0H — Medical and Surgical, Skin and Breast. CMS.gov; 2025.

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