ICD-9-CM diagnosis code (retired)
242.80 — Thyrotoxicosis of other specified origin without mention of thyrotoxic crisis or storm
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 242.80
242.80 is an ICD-9-CM diagnosis code for thyrotoxicosis of other specified origin without mention of thyrotoxic crisis or storm. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to 2 ICD-10-CM codes, such as E05.40 (Thyrotoxicosis factitia without thyrotoxic crisis or storm) and E05.80 (Other thyrotoxicosis without thyrotoxic crisis or storm). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 242.80
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.