ICD-9-CM diagnosis code (retired)
364.63 — Primary cyst of pars plana
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 364.63
364.63 is an ICD-9-CM diagnosis code for primary cyst of pars plana. 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, H21.349 (Primary cyst of pars plana, unspecified eye). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- H21.349Primary cyst of pars plana, unspecified eyeapproximate
Common questions about 364.63
What is the ICD-10 code for ICD-9 364.63?
- The GEMs map 364.63 to ICD-10-CM H21.349.
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.