ICD-9-CM Diagnosis Code 944.21
Diagnosis Code: 944.21 (Raw: 94421)
Description: Blisters, epidermal loss [second degree] of single digit [finger (nail)] other than thumb
Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)
Fiscal Year: 2026 Reference
CMS Section 111 Status: Valid for reporting.
Overview & Historical Usage
ICD-9-CM code 944.21 is designated for Blisters, epidermal loss [second degree] of single digit [finger (nail)] other than thumb. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.
