Is R12 a billable ICD-10-CM code?

Yes. R12 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does R12 sit in the tabular list?

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving the digestive system and abdomen (R10-R19).

What cannot be coded together with R12?

R12 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

R12

R12 — Heartburn

Billable / specific codeICD-10-CM

R12 is a billable, specific ICD-10-CM code for heartburn. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

functional dyspepsia (K30)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

dyspepsia NOS (R10.13)

Other codes that can never be billed with R12

These codes carry an Excludes1 note pointing at R12. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R12 alone.

K30Functional dyspepsia

Risk adjustment

R12 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

R12 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
A57326Billing and Coding: Electrocardiograms
A57414Billing and Coding: Upper Gastrointestinal Endoscopy (Diagnostic and Therapeutic)

How R12 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to R12.

Brash(water)
Heartburn
Pyrosis
Waterbrash

Questions about R12

Is R12 a billable ICD-10-CM code?: Yes. R12 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does R12 sit in the tabular list?: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving the digestive system and abdomen (R10-R19).
What cannot be coded together with R12?: R12 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.