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ICD-10-CM 2027 diagnosis code

I07.0Rheumatic tricuspid stenosis

✓ Billable / specific

I07.0 is a valid, billable ICD-10-CM code for rheumatic tricuspid stenosis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Tricuspid valve stenosis.

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 I07.0

I07.0 is the ICD-10-CM diagnosis code for rheumatic tricuspid stenosis. It belongs to category I07 (rheumatic tricuspid valve diseases), block I05-I09 (chronic rheumatic heart diseases) and chapter 9 (diseases of the circulatory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within I07 (rheumatic tricuspid valve diseases), I07.0 is specifically for rheumatic tricuspid stenosis. Related codes cover rheumatic tricuspid insufficiency (I07.1), rheumatic tricuspid stenosis and insufficiency (I07.2), other rheumatic tricuspid valve diseases (I07.8) and rheumatic tricuspid valve disease, unspecified (I07.9).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 306 (Cardiac Congenital and Valvular Disorders with MCC, relative weight 1.546) and DRG 307 (Cardiac Congenital and Valvular Disorders without MCC, relative weight 0.9148), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

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

Before ICD-10, this condition was coded in ICD-9-CM as 397.0 (diseases of tricuspid valve).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Tricuspid (valve) stenosis (rheumatic)

Notes that apply from higher levels

Instructions written at a parent level also apply to I07.0.

› From I07 Rheumatic tricuspid valve diseases
Includes
  • rheumatic tricuspid valve diseases specified as rheumatic or unspecified
Excludes1
  • tricuspid valve disease specified as nonrheumatic (I36.-)
  • tricuspid valve disease with aortic and/or mitral valve involvement (I08.-)

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

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to I07.0.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 397.0Diseases of tricuspid valveapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about I07.0

Is I07.0 billable?

Yes. I07.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I07.0 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I07.0 as a principal diagnosis.

Is I07.0 a CC or MCC?

No. I07.0 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does I07.0 group to?

I07.0 is used in the MS-DRG v44.0 logic for MS-DRG 306 (Cardiac Congenital and Valvular Disorders with MCC) and MS-DRG 307 (Cardiac Congenital and Valvular Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for I07.0?

The CMS General Equivalence Mappings map I07.0 to ICD-9-CM 397.0.