R94.31: Abnormal electrocardiogram [ECG] [EKG]
R94.31 is the billable ICD-10-CM diagnosis code for Abnormal electrocardiogram [ECG] [EKG]. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code R94.31?
R94.31 is the ICD-10-CM diagnosis code for Abnormal electrocardiogram [ECG] [EKG]. It belongs to category R94 (Abnormal results of function studies).
Is R94.31 a billable code?
Yes. R94.31 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does R94.31 belong to?
R94.31 is part of ICD-10-CM category R94 — Abnormal results of function studies, which has 46 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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