L89.104

Pressure ulcer of unspecified part of back, stage 4

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC379

Pressure Ulcer of Skin with Necrosis Through to Muscle, Tendon, or Bone

CMS-HCC ESRD V24

HCC157

Pressure Ulcer of Skin with Necrosis Through to Muscle, Tendon, or Bone

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · L89.104
Synonyms

Healing pressure ulcer of unspecified part of back, stage 4 Pressure ulcer with necrosis of soft tissues through to underlying muscle, tendon, or bone, unspecified part of back

Inherited from L89Pressure ulcer
Includes

bed sore decubitus ulcer plaster ulcer pressure area pressure sore

Excludes 2

decubitus (trophic) ulcer of cervix (uteri) (N86) diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622) non-pressure chronic ulcer of skin (L97.-) skin infections (L00-L08) varicose ulcer (I83.0, I83.2)

Code first

any associated gangrene (I96)

Inherited from chapter 12Diseases of the skin and subcutaneous tissue
Excludes 2

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.-)

Official Guidelines for L89.104

FY 2026 ›
I.C.12Chapter-specific guidanceChapter 12: Diseases of the Skin and Subcutaneous Tissue

Subsections

Sections that reference L89.104

Sections whose FY 2026 text names L89.104, its L89 category, or a range containing it — the chapter guidance above is the authoritative source.