ICD-9-CM Diagnosis Code 270.4
Diagnosis Code: 270.4 (Raw: 2704)
Description: Disturbances of sulphur-bearing amino-acid metabolism
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 270.4 is designated for Disturbances of sulphur-bearing amino-acid metabolism. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.
