ICD-10-CM 2027
ICD-10 code for Waterbrash
From the official ICD-10-CM alphabetic index entry “Waterbrash”. Page updated September 29, 2026.
About coding Waterbrash
The ICD-10-CM code for Waterbrash is R12 (Heartburn).
Don't report R12 together with the conditions in its Excludes1 note: functional dyspepsia (K30).
The conditions in its Excludes2 note aren't part of R12, but may be coded alongside it if the patient has both: dyspepsia NOS (R10.13).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for R12)
- functional dyspepsia (K30)
Common questions about Waterbrash ICD-10 codes
What is the ICD-10 code for Waterbrash?
- R12 — Heartburn.
Is R12 billable?
- Yes. R12 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R12 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R12 as a principal diagnosis.
Is R12 a CC or MCC?
- No. R12 is neither a CC nor an MCC under MS-DRG v44.0.