I34.2

Billable

ChapterI00–I99

Ranksubcategory

Official Description

Nonrheumatic mitral (valve) stenosis

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 9: Diseases of the Circulatory System (I00-I99).

Instructional Notes

Code Also

, if applicable:
nonrheumatic mitral (valve) annulus calcification (I34.81)

General instructions are available for the parent sections:

View CH9 Notes View I34 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)

I30-I5AOther forms of heart disease (I30-I5A)

I34Nonrheumatic mitral valve disorders

I34.2Nonrheumatic mitral (valve) stenosis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I34.2:

categoryI34

Nonrheumatic mitral valve disorders

View context instructions

chapterCH9

Diseases of the circulatory system (I00-I99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I34.2. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths

Stenosis, stenotic (cicatricial)1 unique routes

mitral (chronic) (inactive) (valve)

specified cause, except rheumatic→I34.2

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 306

Cardiac Congenital and Valvular Disorders with MCC

DRG 307

Cardiac Congenital and Valvular Disorders without MCC

Cross Reference

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