ICD-9-CM diagnosis code (retired)
620.1 — Corpus luteum cyst or hematoma
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 620.1
620.1 is an ICD-9-CM diagnosis code for corpus luteum cyst or hematoma. 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 3 ICD-10-CM codes, such as N83.10 (Corpus luteum cyst of ovary, unspecified side), N83.11 (Corpus luteum cyst of right ovary) and N83.12 (Corpus luteum cyst of left ovary). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 620.1
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.