R94 Abnormal results of function studiesNon-billable header with 9 child codes.
R94.0 Abnormal results of function studies of central nervous systemR94.1 Abnormal results of function studies of peripheral nervous system and special sensesR94.2 Abnormal results of pulmonary function studiesR94.3 Abnormal results of cardiovascular function studiesR94.4 Abnormal results of kidney function studiesR94.5 Abnormal results of liver function studiesR94.6 Abnormal results of thyroid function studiesR94.7 Abnormal results of other endocrine function studiesR94.8 Abnormal results of function studies of other organs and systemsT88.7 Unspecified adverse effect of drug or medicament ("specified adverse effects of drugs and medicaments (A00-R94 and T80-T88.6, T88.8)")T88.7 Unspecified adverse effect of drug or medicament ("specified adverse effects of drugs and medicaments (A00-R94 and T80-T88.6, T88.8)")R94 Abnormal results of function studies (this code)R94.0 Abnormal results of function studies of central nervous systemR94.01 Abnormal electroencephalogram [EEG]R94.02 Abnormal brain scanR94.09 Abnormal results of other function studies of central nervous systemR94.1 Abnormal results of function studies of peripheral nervous system and special senses