L99

ICD-10Billable

Oth disorders of skin, subcu in diseases classd elswhr

Official ICD-10-CM descriptor (FY2026)

Other disorders of skin and subcutaneous tissue in diseases classified elsewhere

L99 is valid for submission on a claim — CMS flags it as a billable, specific code.

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

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

Code first

Sequence the underlying condition before this code.

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

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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