ICD-9-CM Diagnosis Code 242.31
Diagnosis Code: 242.31 (Raw: 24231)
Description: Toxic nodular goiter, unspecified type, with mention of thyrotoxic crisis or storm
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 242.31 is designated for Toxic nodular goiter, unspecified type, with mention of thyrotoxic crisis or storm. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.
