R94.131 Abnormal electromyogram [EMG]

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• electromyogram of eye (R94.113)

Applies from R94 Abnormal results of function studies

Includes

• abnormal results of radionuclide [radioisotope] uptake studies
• abnormal results of scintigraphy

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 794.17 Nonspecific abnormal electromyogram [EMG]

Code annotations containing back-references to R94.131

Back-references to R94

• Type 1 Excludes: T88.7 Unspecified adverse effect of drug or medicament ("specified adverse effects of drugs and medicaments (A00-R94 and T80-T88.6, T88.8)")

Diagnosis Index entries for R94.131

• Abnormal, abnormality, abnormalities › electromyogram [EMG]

Nearby codes

• 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] (this code)
• 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]