ICD-9-CM diagnosis code (retired)
099.55 — Other venereal diseases due to chlamydia trachomatis, unspecified genitourinary site
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 099.55
099.55 is an ICD-9-CM diagnosis code for other venereal diseases due to chlamydia trachomatis, unspecified genitourinary site. 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, A56.2 (Chlamydial infection of genitourinary tract, unspecified). The match is exact.
ICD-10-CM equivalents
- A56.2Chlamydial infection of genitourinary tract, unspecifiedexact match
Common questions about 099.55
What is the ICD-10 code for ICD-9 099.55?
- The GEMs map 099.55 to ICD-10-CM A56.2.
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.