ICD-9-CM diagnosis code (retired)
474.11 — Hypertrophy of tonsils alone
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 474.11
474.11 is an ICD-9-CM diagnosis code for hypertrophy of tonsils alone. 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 one ICD-10-CM code, J35.1 (Hypertrophy of tonsils). The match is exact.
ICD-10-CM equivalents
- J35.1Hypertrophy of tonsilsexact match
Common questions about 474.11
What is the ICD-10 code for ICD-9 474.11?
- The GEMs map 474.11 to ICD-10-CM J35.1.
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.