Includes:

  • nonspecific abnormal findings on diagnostic imaging by computerized axial tomography [CAT scan]
  • nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging [MRI][NMR]
  • nonspecific abnormal findings on diagnostic imaging by positron emission tomography [PET scan]
  • nonspecific abnormal findings on diagnostic imaging by thermography
  • nonspecific abnormal findings on diagnostic imaging by ultrasound [echogram]
  • nonspecific abnormal findings on diagnostic imaging by X-ray examination

Excludes1

  • abnormal findings on antenatal screening of mother (O28.-)
  • diagnostic abnormal findings classified elsewhere - see Alphabetical Index
  1. R94 Abnormal results of function studies

    Includes:

    • abnormal results of radionuclide [radioisotope] uptake studies
    • abnormal results of scintigraphy
    1. R94.0 Abnormal results of function studies of central nervous system

      1. R94.01 Abnormal electroencephalogram [EEG]

      2. R94.02 Abnormal brain scan

      3. R94.09 Abnormal results of other function studies of central nervous system

    2. R94.1 Abnormal results of function studies of peripheral nervous system and special senses

      1. R94.11 Abnormal results of function studies of eye

        • R94.110 Abnormal electro-oculogram [EOG]
        • R94.111 Abnormal electroretinogram [ERG]

          Inclusion term(s):

          • Abnormal retinal function study
        • R94.112 Abnormal visually evoked potential [VEP]
        • R94.113 Abnormal oculomotor study
        • R94.118 Abnormal results of other function studies of eye
      2. 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
      3. 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
    3. R94.2 Abnormal results of pulmonary function studies

      Inclusion term(s):

      • Reduced ventilatory capacity
      • Reduced vital capacity
    4. R94.3 Abnormal results of cardiovascular function studies

      1. R94.30 Abnormal result of cardiovascular function study, unspecified

      2. R94.31 Abnormal electrocardiogram [ECG] [EKG]

      3. R94.39 Abnormal result of other cardiovascular function study

        Inclusion term(s):

        • Abnormal electrophysiological intracardiac studies
        • Abnormal phonocardiogram
        • Abnormal vectorcardiogram
    5. R94.4 Abnormal results of kidney function studies

      Inclusion term(s):

      • Abnormal renal function test
    6. R94.5 Abnormal results of liver function studies

    7. R94.6 Abnormal results of thyroid function studies

    8. R94.7 Abnormal results of other endocrine function studies

    9. R94.8 Abnormal results of function studies of other organs and systems

      Inclusion term(s):

      • Abnormal basal metabolic rate [BMR]
      • Abnormal bladder function test
      • Abnormal splenic function test
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.