All ICD10 Codes
Chapter 18

R00–R99: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

Symptoms, Signs and Abnormal Clinical and Laboratory Findings diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)
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Internal Codes
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  • R92.8|

    Other abnormal and inconclusive findings on diagnostic imaging of breast

  • R93|

    Abnormal findings on diagnostic imaging of other body structures

  • R93.0|

    Abnormal findings on diagnostic imaging of skull and head, not elsewhere classified

  • R93.1|

    Abnormal findings on diagnostic imaging of heart and coronary circulation

  • R93.2|

    Abnormal findings on diagnostic imaging of liver and biliary tract

  • R93.3|

    Abnormal findings on diagnostic imaging of other parts of digestive tract

  • R93.4|

    Abnormal findings on diagnostic imaging of urinary organs

  • R93.41|

    Abnormal radiologic findings on diagnostic imaging of renal pelvis, ureter, or bladder

  • R93.42|

    Abnormal radiologic findings on diagnostic imaging of kidney

  • R93.421|

    Abnormal radiologic findings on diagnostic imaging of right kidney

  • R93.422|

    Abnormal radiologic findings on diagnostic imaging of left kidney

  • R93.429|

    Abnormal radiologic findings on diagnostic imaging of unspecified kidney

  • R93.49|

    Abnormal radiologic findings on diagnostic imaging of other urinary organs

  • R93.5|

    Abnormal findings on diagnostic imaging of other abdominal regions, including retroperitoneum

  • 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

  • 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

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