L85.9 – Epidermal thickening, unspecified
ICD-10-CM 2027 diagnosis code · Other disorders of the skin and subcutaneous tissue
ICD-10-CM code
L85.9
- Code
L85.9(claims format:L859)- Description
- Epidermal thickening, unspecified
- 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
- Parent codes
- L85
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
L85 – Other epidermal thickening
Excludes2 (not included here):
- hypertrophic disorders of the skin (L91.-)
Index terms for L85.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in L85
Frequently asked questions
What is ICD-10 code L85.9?
L85.9 is the ICD-10-CM code for epidermal thickening, unspecified, in the block L80-L99 (Other disorders of the skin and subcutaneous tissue).
Is L85.9 a billable code?
Yes. L85.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does L85.9 belong to?
It belongs to category L85 – Other epidermal thickening.
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.