ICD-9-CM diagnosis code (retired)
744.42 — Branchial cleft cyst
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 744.42
744.42 is an ICD-9-CM diagnosis code for branchial cleft cyst. 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, Q18.0 (Sinus, fistula and cyst of branchial cleft). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- Q18.0Sinus, fistula and cyst of branchial cleftapproximate
Common questions about 744.42
What is the ICD-10 code for ICD-9 744.42?
- The GEMs map 744.42 to ICD-10-CM Q18.0.
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.