Current
R21 — Rash and other nonspecific skin eruption
Part of Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified , block Symptoms and signs involving the skin and subcutaneous tissue (R20-R23) .
Official Notes
Includes
rash NOS
Excludes1
specified type of rash- code to condition
Excludes1
vesicular eruption ( R23.8 )
Child Codes
R21 has no child codes in the FY 2027 release -- it is used on its own.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS