2026 ICD-10-CM Diagnosis Code I06.1Rheumatic aortic insufficiency
ICD-10-CM Codes›I00–I99›I05-I09›I06
- Billable — Valid for Submission
- Chronic Condition
I06.1 is a billable ICD-10-CM diagnosis code for rheumatic aortic insufficiency. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 306 through 307. Coders also document this condition as rheumatic aortic regurgitation. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Chronic rheumatic heart disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Rheumatic aortic regurgitation
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Rheumatic aortic incompetence
- Rheumatic aortic regurgitation
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- aortic (valve) - I35.1
- rheumatic - I06.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Insufficiency, insufficient
- aortic (valve)
- rheumatic
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Heart Valve Diseases
Heart valve disease happens when one or more of your heart valves don't work well.
The full article covers:
- What are heart valve diseases?
- What are the types of heart valve diseases?
- What causes heart valve diseases?
- Who is more likely to develop heart valve diseases?
- What are the symptoms of heart valve diseases?
- What other problems can heart valve diseases cause?
- How is heart valve disease diagnosed?
- What are the treatments for heart valve diseases?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I06.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I06.1Overview
Is I06.1 (Rheumatic aortic valve diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report rheumatic aortic insufficiency on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does I06.1 group to?
When rheumatic aortic insufficiency is the principal diagnosis on an inpatient stay, it groups to MS-DRG 306, 307, with relative weights from 0.9132 to 1.5758 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of I06.1?
Under the General Equivalence Mappings, rheumatic aortic insufficiency converts to ICD-9-CM 395.1 (rheumatic aortic insuff). The mapping is a direct match.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
