ICD-10-CM 2027
ICD-10 code for Crusts
From the official ICD-10-CM alphabetic index entry “Crusts”. Page updated September 29, 2026.
About coding Crusts
The ICD-10-CM code for Crusts is R23.4 (Changes in skin texture).
Within R23 (other skin changes), R23.4 is specifically for changes in skin texture. Related codes cover Cyanosis (R23.0), Pallor (R23.1), Flushing (R23.2), spontaneous ecchymoses (R23.3), other skin changes (R23.8) and unspecified skin changes (R23.9).
Don't report R23.4 together with the conditions in its Excludes1 note: epidermal thickening NOS (L85.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for R23.4)
- epidermal thickening NOS (L85.9)
Common questions about Crusts ICD-10 codes
What is the ICD-10 code for Crusts?
- R23.4 — Changes in skin texture.
Is R23.4 billable?
- Yes. R23.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R23.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R23.4 as a principal diagnosis.
Is R23.4 a CC or MCC?
- No. R23.4 is neither a CC nor an MCC under MS-DRG v44.0.