L85.9
Epidermal thickening, unspecified
BillableComplete code, valid to report
L85.9 (also written L859) is a billable ICD-10-CM diagnosis code for epidermal thickening, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category L85 (Other epidermal thickening). The Alphabetic Index lists it under 5 entries. Its coding notes include 11 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (10 notes)
Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- lipomelanotic reticulosis (I89.8)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- viral warts (B07.-)
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 5 entries