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ICD-10-CM 2027 diagnosis code

L89.91Pressure ulcer of unspecified site, stage 1

✓ Billable / specific

L89.91 is a valid, billable ICD-10-CM code for pressure ulcer of unspecified site, stage 1. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About L89.91

L89.91 is the ICD-10-CM diagnosis code for pressure ulcer of unspecified site, stage 1. It belongs to category L89 (pressure ulcer), block L80-L99 (other disorders of the skin and subcutaneous tissue) and chapter 12 (diseases of the skin and subcutaneous tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within L89.9 (pressure ulcer of unspecified site), L89.91 is specifically for pressure ulcer of unspecified site, stage 1. Related codes cover unspecified stage (L89.90), stage 2 (L89.92), stage 3 (L89.93), stage 4 (L89.94), unstageable (L89.95) and Pressure-induced deep tissue damage of unspecified site (L89.96).

Code first: any associated gangrene (I96).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 573 (Skin Graft for Skin Ulcer or Cellulitis with MCC, relative weight 6.3575), DRG 574 (Skin Graft for Skin Ulcer or Cellulitis with CC, relative weight 3.5674), DRG 575 (Skin Graft for Skin Ulcer or Cellulitis without CC/MCC, relative weight 1.8797), DRG 592 (Skin Ulcers with MCC, relative weight 1.9101), DRG 593 (Skin Ulcers with CC, relative weight 1.1575) and DRG 594 (Skin Ulcers without CC/MCC, relative weight 0.7801), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 707.00 (pressure ulcer, unspecified site) and 707.21 (pressure ulcer, stage I).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Healing pressure ulcer of unspecified site, stage 1
  • Pressure pre-ulcer skin changes limited to persistent focal edema, unspecified site

Notes that apply from higher levels

Instructions written at a parent level also apply to L89.91.

› From L89 Pressure ulcer
Includes
  • bed sore
  • decubitus ulcer
  • plaster ulcer
  • pressure area
  • pressure sore
Excludes2
Code first
  • any associated gangrene (I96)

Broader instructions also apply from Chapter 12: Diseases of the skin and subcutaneous tissue.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 09 · Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast

ICD-9-CM equivalent

Converter →
  • 707.00Pressure ulcer, unspecified siteapproximate, combination
  • 707.21Pressure ulcer, stage Iapproximate, combination

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about L89.91

Is L89.91 billable?

Yes. L89.91 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can L89.91 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict L89.91 as a principal diagnosis.

Is L89.91 a CC or MCC?

No. L89.91 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does L89.91 group to?

L89.91 is used in the MS-DRG v44.0 logic for MS-DRG 573 (Skin Graft for Skin Ulcer or Cellulitis with MCC), MS-DRG 574 (Skin Graft for Skin Ulcer or Cellulitis with CC), MS-DRG 575 (Skin Graft for Skin Ulcer or Cellulitis without CC/MCC), MS-DRG 592 (Skin Ulcers with MCC), MS-DRG 593 (Skin Ulcers with CC) and MS-DRG 594 (Skin Ulcers without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for L89.91?

The CMS General Equivalence Mappings map L89.91 to ICD-9-CM 707.00 and 707.21.