L99 – Other disorders of skin and subcutaneous tissue in diseases classified elsewhere
ICD-10-CM 2027 diagnosis code · Other disorders of the skin and subcutaneous tissue
ICD-10-CM code
L99
- Code
L99(claims format:L99)- Description
- Other disorders of skin and subcutaneous tissue in diseases classified elsewhere
- Short description
- Oth disorders of skin, subcu in diseases classd elswhr
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 12. Diseases of the skin and subcutaneous tissue (L00-L99)
- Block
- L80-L99 Other disorders of the skin and subcutaneous tissue
Notes for L99
Excludes1 (not coded here):
Code first:
- underlying disease, such as:
- amyloidosis (E85.-)
Index terms for L99
Entries in the ICD-10-CM alphabetic index that lead to this code:
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, in the block L80-L99 (Other disorders of the skin and subcutaneous tissue).
Is L99 a billable code?
Yes. L99 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.