ICD-10-CM 2027 diagnosis code

I37Nonrheumatic pulmonary valve disorders

Not billable — use a more specific code

I37 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I37

I37 is the ICD-10-CM diagnosis code for nonrheumatic pulmonary valve disorders. It belongs to block I30-I5A (other forms of heart disease) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: I37.0 (stenosis), I37.1 (insufficiency), I37.2 (insufficiency), I37.8 (disorders) and I37.9 (unspecified).

Don't report I37 together with the conditions in its Excludes1 note: pulmonary valve disorder specified as congenital (Q22.1, Q22.2, Q22.3) and pulmonary valve disorder specified as rheumatic (I09.89).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under I37

Coding notes

Excludes1Not coded here — never report together with this code

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

Notes that apply from higher levels

Instructions written at a parent level also apply to I37.

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

Codes whose notes reference I37

I08Excludes2

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about I37

Is I37 billable?: No. I37 is a header code. Report one of its more specific subcodes instead.