R94.3Abnormal results of cardiovascular function studies

R94.3 is the ICD-10-CM diagnosis code for abnormal results of cardiovascular function studies. It belongs to category R94 (abnormal results of function studies), block R90-R94 (abnormal findings on diagnostic imaging and in function studies, without diagnosis) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within R94 (abnormal results of function studies), R94.3 is specifically for abnormal results of cardiovascular function studies. Related codes cover of central nervous system (R94.0), of peripheral nervous system and special senses (R94.1), pulmonary function studies (R94.2), kidney function studies (R94.4), liver function studies (R94.5), thyroid function studies (R94.6), other endocrine function studies (R94.7) and of other organs and systems (R94.8).

To report this condition, pick the subcode that matches the documentation: R94.30 (unspecified), R94.31 ([EKG]) and R94.39 (study).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.