L99

L99: Other disorders of skin and subcutaneous tissue in diseases classified elsewhere

Billable / specific codeICD-10-CM

L99 is a billable, specific ICD-10-CM code for other disorders of skin and subcutaneous tissue in diseases classified elsewhere. It is valid for submission on a claim.

Check L99 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Code first

The underlying condition must be sequenced before this code.

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

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

L99 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56439Billing and Coding: Blepharoplasty
A56766Billing and Coding: Incision and Drainage (I&D) of Abscess of Skin, Subcutaneous and Accessory Structures
A57044Billing and Coding: Removal of Benign Skin Lesions
A57482Billing and Coding: Removal of Benign Skin Lesions

Code history

Unchanged in every release from FY2024 to FY2027.