Heartburn (R12) ICD-10-CM
The R12 code range covers heartburn with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- functional dyspepsia K30
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- dyspepsia NOS R10.13
Codes in the R12 Range 1 codes · 1 billable
- R12 Heartburn
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the R12 range.
Heartburn
Substernal pain or burning sensation, usually associated with regurgitation of gastric juice into the esophagus.
About the R12 Code Range
Heartburn is pain or burning behind the breastbone, usually associated with stomach juice flowing back into the esophagus.
Among symptoms and signs involving the digestive system and abdomen, R12 identifies heartburn.
Questions About This Page
How many billable codes are in the R12 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the R12 range classify?
The range classifies heartburn. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
