L99

Other disorders of skin and subcutaneous tissue in diseases classified elsewhere

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

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

This code · L99

Excludes 1

skin disorders in diabetes (E08-E13 with .62-) skin disorders in gonorrhea (A54.89) skin disorders in syphilis (A51.31, A52.79)

Code first

underlying disease, such as: amyloidosis (E85.-)

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 L99

FY 2026 ›

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

Subsections