2027 ICD-10-CM Diagnosis Code I36.0Nonrheumatic tricuspid (valve) stenosis

ICD-10-CM Codes›I00–I99›I30-I5A›I36

ICD-10-CM I36.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I36.0 is a billable ICD-10-CM diagnosis code for nonrheumatic tricuspid (valve) stenosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 306 through 307. Coders also document this condition as disorder of tricuspid valve prosthesis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nonrheumatic and unspecified valve disorders.

Code Identity

ICD-10-CM Code
I36.0
Billable Status
Yes — Valid for Submission
Code Describes
Nonrheumatic tricuspid (valve) stenosis
Short Description
Nonrheumatic tricuspid (valve) stenosis
Same as the full description in the CMS dataset.
Parent Code
Nonrheumatic tricuspid valve disorders

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI30-I5AOther forms of heart disease
CategoryI36Nonrheumatic tricuspid valve disorders
This CodeI36.0Nonrheumatic tricuspid (valve) stenosis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of tricuspid valve prosthesis
  • Obstruction of tricuspid valve due to neoplasm
  • Postprocedural stenosis of tricuspid valve
  • Prosthetic tricuspid valve stenosis
  • Tricuspid stenosis, non-rheumatic
  • Tricuspid valve disorder, non-rheumatic
  • Tricuspid valve stenosis due to neuroendocrine tumor

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I36.0: its own notes plus those printed at I36 and Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From I36 Nonrheumatic tricuspid valve disorders applies to 5 codes
  • tricuspid valve disorders of unspecified cause (I07.-)
  • tricuspid valve disorders specified as congenital (Q22.4, Q22.8, Q22.9)
  • tricuspid valve disorders specified as rheumatic (I07.-)
  • tricuspid valve disorders with aortic and/or mitral valve involvement (I08.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I36.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming I36.0: they are not reported together with it, unless the two conditions are unrelated.

  • I07 Rheumatic tricuspid valve diseases
    tricuspid valve disease specified as nonrheumatic (I36.-) names I36.-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming I36.0: its condition is not part of those codes, and both may be reported when the patient has both.

  • I08 Multiple valve diseases
    multiple valve disease specified as nonrheumatic (I34.-, I35.-, I36.-, I37.-, I38.-, Q22.-, Q23.-, Q24.8-) names I36.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR003
Nonrheumatic and unspecified valve disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

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 I36.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
424.2 Nonrheum tricusp val dis
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I36.0Overview

What is the ICD-10 code for nonrheumatic tricuspid (valve) stenosis?

The ICD-10-CM code for nonrheumatic tricuspid (valve) stenosis is I36.0 (sometimes written as I360). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is I36.0 (Nonrheumatic tricuspid valve disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report nonrheumatic tricuspid (valve) stenosis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does I36.0 group to?

When nonrheumatic tricuspid (valve) stenosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 306, 307, with relative weights from 0.9146 to 1.5457 depending on complications. Higher weights mean higher Medicare reimbursement.

Can I36.0 be reported with a code from I07?

Not as a rule. The Excludes1 note at I36, which applies to I36.0, lists "tricuspid valve disorders of unspecified cause (I07.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of I36.0?

Under the General Equivalence Mappings, nonrheumatic tricuspid (valve) stenosis converts to ICD-9-CM 424.2 (nonrheum tricusp val dis). The mapping is approximate, so confirm the match fits the documentation.