ICD-9-CM diagnosis code (retired)
647.63 — Other viral diseases in the mother, antepartum condition or complication
About ICD-9-CM 647.63
647.63 is an ICD-9-CM diagnosis code for other viral diseases in the mother, antepartum condition or complication. 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 O98.511 (Other viral diseases complicating pregnancy, first trimester), O98.512 (Other viral diseases complicating pregnancy, second trimester) and O98.513 (Other viral diseases complicating pregnancy, third trimester). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 647.63
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.