ICD-9-CM diagnosis code (retired)
861.20 — Unspecified injury of lung without mention of open wound into thorax
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 861.20
861.20 is an ICD-9-CM diagnosis code for unspecified injury of lung without mention of open wound into thorax. 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, S27.309A (Unspecified injury of lung, unspecified, initial encounter). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- S27.309AUnspecified injury of lung, unspecified, initial encounterapproximate
Common questions about 861.20
What is the ICD-10 code for ICD-9 861.20?
- The GEMs map 861.20 to ICD-10-CM S27.309A.
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.