2027 ICD-10-CM Diagnosis Code L89.506Pressure-induced deep tissue damage of unspecified ankle

ICD-10-CM Codes›L00–L99›L80-L99›L89

ICD-10-CM L89.506
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L89.506 is a billable ICD-10-CM diagnosis code for pressure-induced deep tissue damage of unspecified ankle. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 573 through 575, 592 through 594. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pressure ulcer of skin.

L89.506 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the ESRD (V21) category 160 for payment year 2027.

Code Identity

ICD-10-CM Code
L89.506
Billable Status
Yes — Valid for Submission
Code Describes
Pressure-induced deep tissue damage of unspecified ankle
Short Description
Pressure-induced deep tissue damage of unspecified ankle
Same as the full description in the CMS dataset.
Parent Code
L89.50
Pressure ulcer of unspecified ankle

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL89Pressure ulcer
This CodeL89.506Pressure-induced deep tissue damage of unspecified ankle

Medicare Risk Adjustment (HCC)Billing

L89.506 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
no payment category in the model that pays 100% of MA risk scores
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Other CMS Models
ESRD (V21): HCC 160
ESRD V21 weights: 0.147 dialysis, 0.225–0.799 functioning graft
Part D (RxHCC)
Not mapped
L89.506 does not risk-adjust in the RxHCC prescription drug model

Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L89.506: its own notes plus those printed at L89 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From L89 Pressure ulcer applies to 175 codes
  • bed sore
  • decubitus ulcer
  • plaster ulcer
  • pressure area
  • pressure sore

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From L89 Pressure ulcer applies to 175 codes
From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • lipomelanotic reticulosis (I89.8)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • viral warts (B07.-)

Code First

The underlying condition named in the note is sequenced before this code.

From L89 Pressure ulcer applies to 175 codes
  • any associated gangrene (I96)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name L89.506, its category, or a range that includes it.

Excludes2 4

These codes carry an Excludes2 note naming L89.506: its condition is not part of those codes, and both may be reported when the patient has both.

  • L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified
    pressure ulcer (pressure area) (L89.-) names L89.-, which includes this code
  • L98.4 Non-pressure chronic ulcer of skin, not elsewhere classified
    pressure ulcer (pressure area) (L89.-) names L89.-, which includes this code
  • L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classified
    pressure ulcer (pressure area) (L89.-) names L89.-, which includes this code
  • M70 Soft tissue disorders related to use, overuse and pressure
    pressure ulcer (pressure area) (L89.-) names L89.-, which includes this code

Use Additional Code 1

These codes say to use an additional code from the note, and L89.506 is one of the codes named.

  • G90.4 Autonomic dysreflexia
    pressure ulcer (pressure area) (L89.-) names L89.-, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SKN003
Pressure ulcer of skin
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Pressure Ulcer

    an ulceration caused by prolonged pressure on the skin and tissues when one stays in one position for a long period of time, such as lying in bed. the bony areas of the body are the most frequently affected sites which become ischemic (ischemia) under sustained and constant pressure.

Patient EducationClinical

Pressure Sores

Pressure sores are areas of damaged skin caused by staying in one position for too long. They commonly form where your bones are close to your skin, such as your ankles, back, elbows, heels and hips. You are at risk if you are bedridden, use a wheelchair, or are unable to change your position.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code History & ChangesHistory

Replacement L89.506 replaces the following previously assigned code(s):

  • L89.500 - Pressure ulcer of unspecified ankle, unstageable
FY 2020AddedAdded to the ICD-10-CM code setEffective October 1, 2019.
FY 2021–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L89.506Overview

What is the ICD-10 code for pressure-induced deep tissue damage of unspecified ankle?

The ICD-10-CM code for pressure-induced deep tissue damage of unspecified ankle is L89.506 (sometimes written as L89506). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L89.506 (Pressure ulcer of unspecified ankle) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report pressure-induced deep tissue damage of unspecified ankle on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does L89.506 group to?

When pressure-induced deep tissue damage of unspecified ankle is the principal diagnosis on an inpatient stay, it groups to MS-DRG 592, 573, 574, 575, 593, 594, with relative weights from 0.7347 to 6.3547 depending on complications. Higher weights mean higher Medicare reimbursement.

What is coded first with L89.506?

The Code First note at L89, which applies to L89.506, reads: any associated gangrene (I96). When one of these applies, it is sequenced before L89.506.

Does L89.506 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage: L89.506 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the ESRD (V21) category 160 (Pressure Pre-Ulcer Skin Changes or Unspecified Stage).