ICD-9-CM diagnosis code (retired)
946.4 — Deep necrosis of underlying tissues [deep third degree] without mention of loss of a body part, of multiple specified sites
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 946.4
946.4 is an ICD-9-CM diagnosis code for deep necrosis of underlying tissues [deep third degree] without mention of loss of a body part, of multiple specified sites. 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, T30.0 (Burn of unspecified body region, unspecified degree). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- T30.0Burn of unspecified body region, unspecified degreeapproximate
Common questions about 946.4
What is the ICD-10 code for ICD-9 946.4?
- The GEMs map 946.4 to ICD-10-CM T30.0.
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.