U.S. ICD-10-CM · FY 2027

R12 ICD-10-CM Code: Heartburn

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

R12

Heartburn

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where R12 sits

  1. 1

    Chapter 18

    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

  2. 2

    Section

    Symptoms and signs involving the digestive system and abdomen (R10-R19)

  3. 3

    Category R12

    Heartburn

  4. 4

    Code R12

    Heartburn

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for R12.

Code first

No “code first” instruction is listed for R12.

Use additional code

No “use additional code” instruction is listed for R12.

Excludes1

Conditions that should not be reported together with this code.

  • functional dyspepsia (K30)

Excludes2

Conditions not included here that may be reported separately when present.

  • dyspepsia NOS (R10.13)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

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 source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code R12 mean?

R12 is the FY 2027 U.S. ICD-10-CM code for “Heartburn.”

Is R12 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, R12 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 R12 located in ICD-10-CM?

R12 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Symptoms and signs involving the digestive system and abdomen (R10-R19) (R10–R19), under category R12, Heartburn.

What coding notes are listed for R12?

No inclusion terms are listed for R12 in this reference record. No code-first instruction is listed. Excludes1 notes: functional dyspepsia (K30). Excludes2 notes: dyspepsia NOS (R10.13).

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