ICD-9-CM Diagnosis Code 528.01
Diagnosis Code: 528.01 (Raw: 52801)
Description: Mucositis (ulcerative) due to antineoplastic therapy
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 528.01 is designated for Mucositis (ulcerative) due to antineoplastic therapy. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.