L99

Billable

Other disorders of skin and subcutaneous tissue in diseases classified elsewhere

L99 is the ICD-10-CM code for Other disorders of skin and subcutaneous tissue in diseases classified elsewhere. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
L00-L99
Edition
FY2026

L00-L99 Diseases of the skin and subcutaneous tissue

Excludes1 — not coded here

  • 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.-)

Frequently asked questions

What is ICD-10 code L99?
L99 is the ICD-10-CM code for "Other disorders of skin and subcutaneous tissue in diseases classified elsewhere". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
Is L99 a billable code?
Yes — L99 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from L99?
Excludes1 (not coded here): skin disorders in diabetes (E08-E13 with .62-); skin disorders in gonorrhea (A54.89); skin disorders in syphilis (A51.31, A52.79).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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