2023 ICD-10-CM Diagnosis Code R94

Abnormal results of function studies

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • R94 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM R94 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of R94 - other international versions of ICD-10 R94 may differ.
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • abnormal results of radionuclide [radioisotope] uptake studies
  • abnormal results of scintigraphy
The following code(s) above R94 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to R94:
  • R00-R99
    2023 ICD-10-CM Range R00-R99

    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

    Note
    • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
    • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
    • The conditions and signs or symptoms included in categories R00-R94 consist of:
    • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
    • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
    • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
    • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
    • (e) cases in which a more precise diagnosis was not available for any other reason;
    • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
    Type 2 Excludes
    • abnormal findings on antenatal screening of mother (O28.-)
    • certain conditions originating in the perinatal period (P04-P96)
    • signs and symptoms classified in the body system chapters
    • signs and symptoms of breast (N63, N64.5)
    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
  • R90-R94
    2023 ICD-10-CM Range R90-R94

    Abnormal findings on diagnostic imaging and in function studies, without diagnosis

    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
    Type 1 Excludes
    • abnormal findings on antenatal screening of mother (O28.-)
    • diagnostic abnormal findings classified elsewhere - see Alphabetical Index
    Abnormal findings on diagnostic imaging and in function studies, without diagnosis
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To R94
R93.6 Abnormal findings on diagnostic imaging of limbs
R93.7 Abnormal findings on diagnostic imaging of other parts of musculoskeletal system
R93.8 Abnormal findings on diagnostic imaging of other specified body structures
R93.81 Abnormal radiologic findings on diagnostic imaging of testis
R93.811 Abnormal radiologic findings on diagnostic imaging of right testicle
R93.812 Abnormal radiologic findings on diagnostic imaging of left testicle
R93.813 Abnormal radiologic findings on diagnostic imaging of testicles, bilateral
R93.819 Abnormal radiologic findings on diagnostic imaging of unspecified testicle
R93.89 Abnormal findings on diagnostic imaging of other specified body structures
R93.9 Diagnostic imaging inconclusive due to excess body fat of patient
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

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.