L53.9
Erythematous condition, unspecified
BillableComplete code, valid to report
L53.9 (also written L539) is a billable ICD-10-CM diagnosis code for erythematous condition, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category L53 (Other erythematous conditions). The Alphabetic Index lists it under 2 entries. Its coding notes include 5 Excludes1 entries and 10 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Inherited from L53 Other erythematous conditions
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.-)
Inclusion terms
Conditions classified to this code.
This code
- Erythema NOS
- Erythroderma NOS
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries