R94.31 Abnormal electrocardiogram [ECG] [EKG]
ICD-10-CM · CMS code reference
Official ICD-10-CM description: Abnormal electrocardiogram [ECG] [EKG]
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Includes
- abnormal results of radionuclide [radioisotope] uptake studies
- abnormal results of scintigraphy
- 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 together with this code. The exception is when the two conditions are unrelated to each other.
- long QT syndrome (I45.81)
- abnormal findings on antenatal screening of mother (O28.-)
- diagnostic abnormal findings classified elsewhere - see Alphabetical Index
Related codes
R94.131Abnormal electromyogram [EMG] ICD-10-CMR94.138Abnormal results of other function studies of peripheral nervous system ICD-10-CMR94.2Abnormal results of pulmonary function studies ICD-10-CMR94.30Abnormal result of cardiovascular function study, unspecified ICD-10-CMR94.39Abnormal result of other cardiovascular function study ICD-10-CMR94.4Abnormal results of kidney function studies ICD-10-CMR94.5Abnormal results of liver function studies ICD-10-CMR94.6Abnormal results of thyroid function studies ICD-10-CM
Common questions
Is R94.31 a billable code?
Yes. R94.31 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.