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ICD-9-CM diagnosis code (retired)

633.20 — Ovarian pregnancy without intrauterine pregnancy

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 633.20

633.20 is an ICD-9-CM diagnosis code for ovarian pregnancy without intrauterine pregnancy. 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 O00.201 (Right ovarian pregnancy without intrauterine pregnancy), O00.202 (Left ovarian pregnancy without intrauterine pregnancy) and O00.209 (Unspecified ovarian pregnancy without intrauterine pregnancy). All of these are approximate matches, so review the record to pick the right one.

ICD-10-CM equivalents

Common questions about 633.20

What is the ICD-10 code for ICD-9 633.20?

The GEMs map 633.20 to ICD-10-CM O00.201, O00.202 and O00.209.

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.