Billable / Specific Code
ICD-10-CM R94.31 is the diagnosis code for Abnormal electrocardiogram [ECG] [EKG]. This code falls under the section "Abnormal findings on diagnostic imaging and in function studies, without diagnosis" within Chapter 18 — Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as R94.31. They are mutually exclusive:
Understanding where R94.31 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, R94.31 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
R94.31 is the ICD-10-CM diagnosis code for "Abnormal electrocardiogram [ECG] [EKG]". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of R94.31 is R94.3 ("Abnormal results of cardiovascular function studies"). R94.31 provides a more specific classification within this category.
R94.31 is located in Section R90-R94 — "Abnormal findings on diagnostic imaging and in function studies, without diagnosis" within Chapter 18 of the ICD-10-CM Tabular List.
Use R94.31 when the patients documented diagnosis matches "Abnormal electrocardiogram [ECG] [EKG]" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Abnormal electrocardiogram [ECG] [EKG] is R94.31.
Yes, R94.31 can be used as a primary diagnosis code since it is billable and specific.
R94.31 is in Chapter 18 of the ICD-10-CM Tabular List.
Type 1 Excludes for R94.31 include: long QT syndrome (I45.81).
Yes, R94.31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.