ICD-10-CM Diagnosis Code (2025)
Official Description for R21
Rash and other nonspecific skin eruption
Coding Notes & Guidelines for R21
Includes Notes
rash NOS
Excludes1: Not Coded Here
- specified type of rash- code to condition
- vesicular eruption (R23.8)
About ICD-10-CM Code R21 (Rash and other nonspecific skin eruption)
ICD-10-CM code R21 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM R21 became effective on October 1, 2024.
This page provides detailed information about R21 - Rash and other nonspecific skin eruption. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Rash and other nonspecific skin eruption.