R94.31 ICD-10-CM Code: Abnormal electrocardiogram [ECG] [EKG]
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
R94.31Abnormal electrocardiogram [ECG] [EKG]
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where R94.31 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
- 3
Category R94
Abnormal results of function studies
- 4
Subcategory R94.3
Abnormal results of cardiovascular function studies
- 5
Code R94.31
Abnormal electrocardiogram [ECG] [EKG]
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for R94.31.
Code first
No “code first” instruction is listed for R94.31.
Use additional code
No “use additional code” instruction is listed for R94.31.
Excludes1
Conditions that should not be reported together with this code.
- long QT syndrome (I45.81)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for R94.31.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code R94.31 mean?
R94.31 is the FY 2027 U.S. ICD-10-CM code for “Abnormal electrocardiogram [ECG] [EKG].”
Is R94.31 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, R94.31 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is R94.31 located in ICD-10-CM?
R94.31 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94) (R90–R94), under category R94, Abnormal results of function studies and subcategory R94.3, Abnormal results of cardiovascular function studies.
What coding notes are listed for R94.31?
No inclusion terms are listed for R94.31 in this reference record. No code-first instruction is listed. Excludes1 notes: long QT syndrome (I45.81). No Excludes2 note is listed.
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