R90-R94Not billable, use a more specific code below
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings
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Instructional notes
Includes: conditions that are coded here
- 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: not coded here, use a different code
- abnormal findings on antenatal screening of mother (O28.-)
- diagnostic abnormal findings classified elsewhere - see Alphabetical Index
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers when to report symptom, sign, and abnormal finding codes (R00-R99), plus specific rules for falls, coma scales, non-infectious SIRS, death NOS, and NIHSS scores.
- Use of symptom codes (page 75)
- Use of a symptom code with a definitive diagnosis code (page 75)
- Combination codes that include symptoms (page 75)
- Repeated falls (page 76)
- Coma (page 76)
- Functional quadriplegia (page 76)
- SIRS due to Non-Infectious Process (page 77)
- Death NOS (page 77)
All codes under R90-R94
R90-R94 can't be used on a claim. Pick a billable code below; grey headings group them.
- R90Abnormal findings on diagnostic imaging of central nervous system
- R90.0Intracranial space-occupying lesion found on diagnostic imaging of central nervous system
- R90.8Other abnormal findings on diagnostic imaging of central nervous system
- R90.81Abnormal echoencephalogram
- R90.82White matter disease, unspecified
- R90.89Other abnormal findings on diagnostic imaging of central nervous system
- R91Abnormal findings on diagnostic imaging of lung
- R91.1Solitary pulmonary nodule
- R91.8Other nonspecific abnormal finding of lung field
- R92Abnormal and inconclusive findings on diagnostic imaging of breast
- R92.0Mammographic microcalcification found on diagnostic imaging of breast
- R92.1Mammographic calcification found on diagnostic imaging of breast
- R92.2Inconclusive mammogram
- R92.3Mammographic density found on imaging of breast
- R92.30Dense breasts, unspecified
- R92.31Mammographic fatty tissue density of breast
- R92.311Mammographic fatty tissue density, right breast
- R92.312Mammographic fatty tissue density, left breast
- R92.313Mammographic fatty tissue density, bilateral breasts
- R92.32Mammographic fibroglandular density of breast
- R92.321Mammographic fibroglandular density, right breast
- R92.322Mammographic fibroglandular density, left breast
- R92.323Mammographic fibroglandular density, bilateral breasts
- R92.33Mammographic heterogeneous density of breast
- R92.331Mammographic heterogeneous density, right breast
- R92.332Mammographic heterogeneous density, left breast
- R92.333Mammographic heterogeneous density, bilateral breasts
- R92.34Mammographic extreme density of breast
- R92.341Mammographic extreme density, right breast
- R92.342Mammographic extreme density, left breast
- R92.343Mammographic extreme density, bilateral breasts
- R92.8Other abnormal and inconclusive findings on diagnostic imaging of breast
- R93Abnormal findings on diagnostic imaging of other body structures
- R93.0Abnormal findings on diagnostic imaging of skull and head, not elsewhere classified
- R93.1Abnormal findings on diagnostic imaging of heart and coronary circulation
- R93.2Abnormal findings on diagnostic imaging of liver and biliary tract
- R93.3Abnormal findings on diagnostic imaging of other parts of digestive tract
- R93.4Abnormal findings on diagnostic imaging of urinary organs
- R93.41Abnormal radiologic findings on diagnostic imaging of renal pelvis, ureter, or bladder
- R93.42Abnormal radiologic findings on diagnostic imaging of kidney
- R93.421Abnormal radiologic findings on diagnostic imaging of right kidney
- R93.422Abnormal radiologic findings on diagnostic imaging of left kidney
- R93.429Abnormal radiologic findings on diagnostic imaging of unspecified kidney
- R93.49Abnormal radiologic findings on diagnostic imaging of other urinary organs
- R93.5Abnormal findings on diagnostic imaging of other abdominal regions, including retroperitoneum
- R93.6Abnormal findings on diagnostic imaging of limbs
- R93.7Abnormal findings on diagnostic imaging of other parts of musculoskeletal system
- R93.8Abnormal findings on diagnostic imaging of other specified body structures
- R93.81Abnormal radiologic findings on diagnostic imaging of testis
- R93.811Abnormal radiologic findings on diagnostic imaging of right testicle
- R93.812Abnormal radiologic findings on diagnostic imaging of left testicle
- R93.813Abnormal radiologic findings on diagnostic imaging of testicles, bilateral
- R93.819Abnormal radiologic findings on diagnostic imaging of unspecified testicle
- R93.89Abnormal findings on diagnostic imaging of other specified body structures
- R93.9Diagnostic imaging inconclusive due to excess body fat of patient
- R94Abnormal results of function studies
- R94.0Abnormal results of function studies of central nervous system
- R94.01Abnormal electroencephalogram [EEG]
- R94.02Abnormal brain scan
- R94.09Abnormal results of other function studies of central nervous system
- R94.1Abnormal results of function studies of peripheral nervous system and special senses
- R94.11Abnormal results of function studies of eye
- R94.110Abnormal electro-oculogram [EOG]
- R94.111Abnormal electroretinogram [ERG]
- R94.112Abnormal visually evoked potential [VEP]
- R94.113Abnormal oculomotor study
- R94.118Abnormal results of other function studies of eye
- R94.12Abnormal results of function studies of ear and other special senses
- R94.120Abnormal auditory function study
- R94.121Abnormal vestibular function study
- R94.128Abnormal results of other function studies of ear and other special senses
- R94.13Abnormal results of function studies of peripheral nervous system
- R94.130Abnormal response to nerve stimulation, unspecified
- R94.131Abnormal electromyogram [EMG]
- R94.138Abnormal results of other function studies of peripheral nervous system
- R94.2Abnormal results of pulmonary function studies
- R94.3Abnormal results of cardiovascular function studies
- R94.30Abnormal result of cardiovascular function study, unspecified
- R94.31Abnormal electrocardiogram [ECG] [EKG]
- R94.39Abnormal result of other cardiovascular function study
- R94.4Abnormal results of kidney function studies
- R94.5Abnormal results of liver function studies
- R94.6Abnormal results of thyroid function studies
- R94.7Abnormal results of other endocrine function studies
- R94.8Abnormal results of function studies of other organs and systems
R90-R94 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.