I05.1

Billable

ChapterI00–I99

Ranksubcategory

Official Description

Rheumatic mitral insufficiency

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

Includes

Rheumatic mitral incompetence
Rheumatic mitral regurgitation

Excludes1(Not coded here)

mitral insufficiency not specified as rheumatic (I34.0)

General instructions are available for the parent sections:

View CH9 Notes View I05 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)

I05-I09Chronic rheumatic heart diseases (I05-I09)

I05Rheumatic mitral valve diseases

I05.1Rheumatic mitral insufficiency

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I05.1:

categoryI05

Rheumatic mitral valve diseases

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 I05.1. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths

Insufficiency, insufficient1 unique routes

mitral (valve)

rheumatic→I05.1

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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