862.9 — Injury to multiple and unspecified intrathoracic organs, with open wound into cavity

862.9 is an ICD-9-CM diagnosis code for injury to multiple and unspecified intrathoracic organs, with open wound into cavity. 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 2 ICD-10-CM codes, such as S21.309A (Unspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, initial encounter) and S27.9XXA (Injury of unspecified intrathoracic organ, initial encounter). All of these are approximate matches, so review the record to pick the right one. Some mappings are combinations: more than one ICD-10 code is needed to fully express the ICD-9 code.