DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

R12 diagnosis code · Billable category · FY2027

R12 Heartburn

  • Billable
  • Not CC/MCC
  • POA reported

R12 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

ICD-10 code by name

What is the ICD-10 code for heartburn?
Heartburn ICD-10 code: R12 Heartburn. Search ICD-10 for heartburn
CC / MCC
Neither
MS-DRG
391-392
HCC V28
–
POA
Reported
Code Editor
–
Index entries
4

Instructions

At R12

Excludes1

  • functional dyspepsia (K30) K30

Excludes2

Notes that also apply

Block R10-R19 instructions (Excludes2 9): printed on the block page.

Chapter 18 instructions (Notes 9, Excludes2 4): printed on the chapter 18 page.

Index entries

  • Brash (water) → R12
  • Heartburn → R12
  • Pyrosis → R12
  • Waterbrash → R12

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for R12
CC / MCCNeither
Appendix BMDC 06 Diseases and Disorders of the Digestive System, MS-DRG 391-392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC…)
Code Editor–
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy