ICD-9-CM diagnosis code (retired)
464.51 — Supraglottitis unspecified, with obstruction
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 464.51
464.51 is an ICD-9-CM diagnosis code for Supraglottitis unspecified, with obstruction. 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, J04.31 (Supraglottitis, unspecified, with obstruction). The match is exact.
ICD-10-CM equivalents
- J04.31Supraglottitis, unspecified, with obstructionexact match
Common questions about 464.51
What is the ICD-10 code for ICD-9 464.51?
- The GEMs map 464.51 to ICD-10-CM J04.31.
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.