Convert ICD-10-CM T23.309A to ICD-9-CM

ICD-10-CM T23.309A converts approximately to:
  • 2015 ICD-9-CM 944.30 Full-thickness skin loss [third degree, not otherwise specified] of hand, unspecified site
  • 2015 ICD-9-CM 944.40 Deep necrosis of underlying tissues [deep third degree] without mention of loss of a body part, hand, unspecified site

Note: approximate conversions between ICD-9-CM codes and ICD-10-CM codes may require clinical interpretation in order to determine the most appropriate conversion code(s) for your specific coding situation.

Source: 2021 ICD-10-CM CMS General Equivalence Mappings.