Is I37.9 a billable ICD-10-CM code?

Yes. I37.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does I37.9 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Other forms of heart disease (I30-I5A).

What cannot be coded together with I37.9?

I37.9 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above I37.9 (I37) and apply to it just the same.

I37.9

I37.9 — Nonrheumatic pulmonary valve disorder, unspecified

Billable / specific codeICD-10-CM

I37.9 is a billable, specific ICD-10-CM code for nonrheumatic pulmonary valve disorder, unspecified. It is valid for submission on a claim.

Excludes1 inherited from the categories above I37.9

These are not written on I37.9, but they bind it: a note on a category applies to every code beneath it. Billing I37.9 with anything listed here is a denial.

Written on I37 — Nonrheumatic pulmonary valve disorders

pulmonary valve disorder specified as congenital (Q22.1, Q22.2, Q22.3)
pulmonary valve disorder specified as rheumatic (I09.89)

Risk adjustment

I37.9 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

I37.9 is named in 13 Medicare coverage policies — 13 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A52868Billing and Coding: Transesophageal Echocardiography (TEE)
A56476Billing and Coding: Cardiac Radionuclide Imaging
A56476Billing and Coding: Cardiac Radionuclide Imaging

How I37.9 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 I37.9.

Disease, diseased›pulmonary›valve
Lesion›pulmonary›valve

Code history

I37.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share I37. If I37.9 is not quite right, the correct code is usually one of these.

Questions about I37.9

Is I37.9 a billable ICD-10-CM code?: Yes. I37.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I37.9 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Other forms of heart disease (I30-I5A).
What cannot be coded together with I37.9?: I37.9 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above I37.9 (I37) and apply to it just the same.