Abnormal results of function studies (R94)
The ICD-10 code section R94 covers abnormal results of function studies, primarily identifying unexpected or unusual findings from diagnostic tests across various body systems without specifying a definitive disease. These codes help document abnormal diagnostic study outcomes when no confirmed diagnosis is yet established.
This section includes codes like R94.01 for abnormal electroencephalograms (EEG), which encompass terms such as reduction of alpha activity and rhythmic discharges, aiding medical coders in linking abnormal EEG findings to the correct code. Abnormal brain scans are coded as R94.02, while other abnormal central nervous system function tests fall under R94.09, including auditory or cerebral evoked potentials. Eye function abnormalities, like abnormal electroretinograms (ERG) and electro-oculograms (EOG), use codes such as R94.110 and R94.111. Abnormal results in pulmonary, cardiovascular, kidney, liver, thyroid, and endocrine function studies are also included with codes ranging from R94.2 to R94.7. Proper use of these codes ensures precise identification of abnormal study results, assisting both healthcare providers and coders in medical record accuracy and patient management.
- R94 - Abnormal results of function studies
- R94.0 - Abnormal results of function studies of central nerv
- R94.1 - Abnormal results of function studies of peripheral n
- R94.11 - Abnormal results of function studies of eye
- R94.12 - Abnormal results of function studies of ear and oth
- R94.13 - Abnormal results of function studies of peripheral
- R94.3 - Abnormal results of cardiovascular function studies
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
R94 Abnormal results of function studies
R94.0 Abnormal results of function studies of central nervous system
- R94.01 Abnormal electroencephalogram [EEG]
- R94.02 Abnormal brain scan
- R94.09 Abnormal results of other function studies of central nervous system
R94.1 Abnormal results of function studies of peripheral nervous system and special senses
R94.11 Abnormal results of function studies of eye
- R94.110 Abnormal electro-oculogram [EOG]
- R94.111 Abnormal electroretinogram [ERG]
- R94.112 Abnormal visually evoked potential [VEP]
- R94.113 Abnormal oculomotor study
- R94.118 Abnormal results of other function studies of eye
R94.12 Abnormal results of function studies of ear and other special senses
- R94.120 Abnormal auditory function study
- R94.121 Abnormal vestibular function study
- R94.128 Abnormal results of other function studies of ear and other special senses
R94.13 Abnormal results of function studies of peripheral nervous system
- R94.130 Abnormal response to nerve stimulation, unspecified
- R94.131 Abnormal electromyogram [EMG]
- R94.138 Abnormal results of other function studies of peripheral nervous system
- R94.2 Abnormal results of pulmonary function studies
R94.3 Abnormal results of cardiovascular function studies
- R94.30 Abnormal result of cardiovascular function study, unspecified
- R94.31 Abnormal electrocardiogram [ECG] [EKG]
- R94.39 Abnormal result of other cardiovascular function study
- R94.4 Abnormal results of kidney function studies
- R94.5 Abnormal results of liver function studies
- R94.6 Abnormal results of thyroid function studies
- R94.7 Abnormal results of other endocrine function studies
- R94.8 Abnormal results of function studies of other organs and systems
Abnormal results of function studies (R94)
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- abnormal results of radionuclide [radioisotope] uptake studies
- abnormal results of scintigraphy
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Congenital Abnormalities
Malformations of organs or body parts during development in utero.
Teratogenesis
The formation of CONGENITAL ABNORMALITIES.
