MCMCB Pro
L89.100

L89.100Pressure ulcer of unspecified part of back, unstageable

Billable / specific codeICD-10-CM

L89.100 is a billable, specific ICD-10-CM code for pressure ulcer of unspecified part of back, unstageable. It is valid for submission on a claim.

Risk adjustment

L89.100 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 381 Pressure Ulcer of Skin with Full Thickness Skin Loss1.075 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

L89.100 is named in 5 Medicare coverage policies 3 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56566Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
  • A57067Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
  • A52490Pressure Reducing Support Surfaces - Group 2 - Policy Article
  • A53064Billing and Coding: Outpatient Occupational Therapy

Related codes at this level

Codes that share L89.10. If L89.100 is not quite right, the correct code is usually one of these.

Questions about L89.100

Is L89.100 a billable ICD-10-CM code?
Yes. L89.100 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L89.100 sit in the tabular list?
Diseases of the skin and subcutaneous tissue (L00-L99), in the block Other disorders of the skin and subcutaneous tissue (L80-L99).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.