ICD-10 · PDGM grouping
I30-I5A — Other forms of heart disease
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in range
146
No clinical group
11
A period cannot be grouped from these.
Barred as primary
3
CMS rejects these in the primary position.
Where these codes group
135 of the 146 codes in I30-I5A group to MMTA - Cardiac and Circulatory. A further 11 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in I30-I5A
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
- I30Acute pericarditis4 codes
- I31Other diseases of pericardium8 codes
- I32Pericarditis in diseases classified elsewhere1 code
- I33Acute and subacute endocarditis2 codes
- I34Nonrheumatic mitral valve disorders6 codes
- I35Nonrheumatic aortic valve disorders5 codes
- I36Nonrheumatic tricuspid valve disorders5 codes
- I37Nonrheumatic pulmonary valve disorders5 codes
- I38Endocarditis, valve unspecified1 code
- I39Endocarditis and heart valve disorders in diseases classified elsewhere1 code
- I40Acute myocarditis4 codes
- I41Myocarditis in diseases classified elsewhere1 code
- I42Cardiomyopathy13 codes
- I43Cardiomyopathy in diseases classified elsewhere1 code
- I44Atrioventricular and left bundle-branch block10 codes
- I45Other conduction disorders11 codes
- I46Cardiac arrest3 codes
- I47Paroxysmal tachycardia9 codes
- I48Atrial fibrillation and flutter9 codes
- I49Other cardiac arrhythmias12 codes
- I50Heart failure23 codes
- I51Complications and ill-defined descriptions of heart disease10 codes
- I52Other heart disorders in diseases classified elsewhere1 code
- I5ANon-ischemic myocardial injury (non-traumatic)1 code
Every code in I30-I5A
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| I300 | Acute nonspecific idiopathic pericarditis | H | Can lead a claim |
| I301 | Infective pericarditis | H | Can lead a claim |
| I308 | Other forms of acute pericarditis | H | Can lead a claim |
| I309 | Acute pericarditis, unspecified | H | Can lead a claim |
| I310 | Chronic adhesive pericarditis | H | Can lead a claim |
| I311 | Chronic constrictive pericarditis | H | Can lead a claim |
| I312 | Hemopericardium, not elsewhere classified | H | Can lead a claim |
| I3131 | Malignant pericardial effusion in diseases classd elswhr | None | Cannot lead a claim |
| I3139 | Other pericardial effusion (noninflammatory) | H | Can lead a claim |
| I314 | Cardiac tamponade | None | Cannot lead a claim |
| I318 | Other specified diseases of pericardium | H | Can lead a claim |
| I319 | Disease of pericardium, unspecified | H | Can lead a claim |
| I32 | Pericarditis in diseases classified elsewhere | None | Cannot lead a claim |
| I330 | Acute and subacute infective endocarditis | H | Can lead a claim |
| I339 | Acute and subacute endocarditis, unspecified | H | Can lead a claim |
| I340 | Nonrheumatic mitral (valve) insufficiency | H | Can lead a claim |
| I341 | Nonrheumatic mitral (valve) prolapse | H | Can lead a claim |
| I342 | Nonrheumatic mitral (valve) stenosis | H | Can lead a claim |
| I3481 | Nonrheumatic mitral (valve) annulus calcification | H | Can lead a claim |
| I3489 | Other nonrheumatic mitral valve disorders | H | Can lead a claim |
| I349 | Nonrheumatic mitral valve disorder, unspecified | H | Can lead a claim |
| I350 | Nonrheumatic aortic (valve) stenosis | H | Can lead a claim |
| I351 | Nonrheumatic aortic (valve) insufficiency | H | Can lead a claim |
| I352 | Nonrheumatic aortic (valve) stenosis with insufficiency | H | Can lead a claim |
| I358 | Other nonrheumatic aortic valve disorders | H | Can lead a claim |
| I359 | Nonrheumatic aortic valve disorder, unspecified | H | Can lead a claim |
| I360 | Nonrheumatic tricuspid (valve) stenosis | H | Can lead a claim |
| I361 | Nonrheumatic tricuspid (valve) insufficiency | H | Can lead a claim |
| I362 | Nonrheumatic tricuspid (valve) stenosis with insufficiency | H | Can lead a claim |
| I368 | Other nonrheumatic tricuspid valve disorders | H | Can lead a claim |
| I369 | Nonrheumatic tricuspid valve disorder, unspecified | H | Can lead a claim |
| I370 | Nonrheumatic pulmonary valve stenosis | H | Can lead a claim |
| I371 | Nonrheumatic pulmonary valve insufficiency | H | Can lead a claim |
| I372 | Nonrheumatic pulmonary valve stenosis with insufficiency | H | Can lead a claim |
| I378 | Other nonrheumatic pulmonary valve disorders | H | Can lead a claim |
| I379 | Nonrheumatic pulmonary valve disorder, unspecified | H | Can lead a claim |
| I38 | Endocarditis, valve unspecified | H | Can lead a claim |
| I39 | Endocarditis and heart valve disord in dis classd elswhr | None | Cannot lead a claim |
| I400 | Infective myocarditis | H | Can lead a claim |
| I401 | Isolated myocarditis | H | Can lead a claim |
| I408 | Other acute myocarditis | H | Can lead a claim |
| I409 | Acute myocarditis, unspecified | H | Can lead a claim |
| I41 | Myocarditis in diseases classified elsewhere | None | Cannot lead a claim |
| I4200 | Dilated cardiomyopathy, unspecified | None | Cannot lead a claim |
| I4201 | Familial-genetic dilated cardiomyopathy | H | Can lead a claim, code first applies |
| I4209 | Other dilated cardiomyopathy | H | Can lead a claim, code first applies |
| I421 | Obstructive hypertrophic cardiomyopathy | H | Can lead a claim, code first applies |
| I422 | Other hypertrophic cardiomyopathy | H | Can lead a claim, code first applies |
| I423 | Endomyocardial (eosinophilic) disease | H | Can lead a claim, code first applies |
| I424 | Endocardial fibroelastosis | H | Can lead a claim, code first applies |
| I425 | Other restrictive cardiomyopathy | H | Can lead a claim, code first applies |
| I426 | Alcoholic cardiomyopathy | H | Can lead a claim, code first applies |
| I427 | Cardiomyopathy due to drug and external agent | H | Can lead a claim, code first applies |
| I4281 | Arrhythmogenic cardiomyopathy | H | Can lead a claim, code first applies |
| I4289 | Other cardiomyopathies not elsewhere classified | H | Can lead a claim, code first applies |
| I429 | Cardiomyopathy, unspecified | H | Can lead a claim, code first applies |
| I43 | Cardiomyopathy in diseases classified elsewhere | None | Cannot lead a claim |
| I440 | Atrioventricular block, first degree | H | Can lead a claim |
| I441 | Atrioventricular block, second degree | H | Can lead a claim |
| I442 | Atrioventricular block, complete | H | Can lead a claim |
| I4430 | Unspecified atrioventricular block | H | Can lead a claim |
| I4439 | Other atrioventricular block | H | Can lead a claim |
| I444 | Left anterior fascicular block | H | Can lead a claim |
| I445 | Left posterior fascicular block | H | Can lead a claim |
| I4460 | Unspecified fascicular block | H | Can lead a claim |
| I4469 | Other fascicular block | H | Can lead a claim |
| I447 | Left bundle-branch block, unspecified | H | Can lead a claim |
| I450 | Right fascicular block | H | Can lead a claim |
| I4510 | Unspecified right bundle-branch block | H | Can lead a claim |
| I4519 | Other right bundle-branch block | H | Can lead a claim |
| I452 | Bifascicular block | H | Can lead a claim |
| I453 | Trifascicular block | H | Can lead a claim |
| I454 | Nonspecific intraventricular block | H | Can lead a claim |
| I455 | Other specified heart block | H | Can lead a claim |
| I456 | Pre-excitation syndrome | H | Can lead a claim |
| I4581 | Long QT syndrome | H | Can lead a claim |
| I4589 | Other specified conduction disorders | H | Can lead a claim |
| I459 | Conduction disorder, unspecified | H | Can lead a claim |
| I462 | Cardiac arrest due to underlying cardiac condition | None | Cannot lead a claim |
| I468 | Cardiac arrest due to other underlying condition | None | Cannot lead a claim |
| I469 | Cardiac arrest, cause unspecified | H | Can lead a claim |
| I470 | Re-entry ventricular arrhythmia | H | Can lead a claim, code first applies |
| I4710 | Supraventricular tachycardia, unspecified | H | Can lead a claim, code first applies |
| I4711 | Inappropriate sinus tachycardia, so stated | H | Can lead a claim, code first applies |
| I4719 | Other supraventricular tachycardia | H | Can lead a claim, code first applies |
| I4720 | Ventricular tachycardia, unspecified | H | Can lead a claim, code first applies |
| I4721 | Torsades de pointes | H | Can lead a claim, code first applies |
| I4722 | Catecholaminergic polymorphic ventricular tachycardia [CPVT] | H | Can lead a claim, code first applies |
| I4729 | Other ventricular tachycardia | H | Can lead a claim, code first applies |
| I479 | Paroxysmal tachycardia, unspecified | H | Can lead a claim, code first applies |
| I480 | Paroxysmal atrial fibrillation | H | Can lead a claim |
| I4811 | Longstanding persistent atrial fibrillation | H | Can lead a claim |
| I4819 | Other persistent atrial fibrillation | H | Can lead a claim |
| I4820 | Chronic atrial fibrillation, unspecified | H | Can lead a claim |
| I4821 | Permanent atrial fibrillation | H | Can lead a claim |
| I483 | Typical atrial flutter | H | Can lead a claim |
| I484 | Atypical atrial flutter | H | Can lead a claim |
| I4891 | Unspecified atrial fibrillation | H | Can lead a claim |
| I4892 | Unspecified atrial flutter | H | Can lead a claim |
| I4901 | Ventricular fibrillation | H | Can lead a claim, code first applies |
| I4902 | Ventricular flutter | H | Can lead a claim, code first applies |
| I491 | Atrial premature depolarization | H | Can lead a claim, code first applies |
| I492 | Junctional premature depolarization | H | Can lead a claim, code first applies |
| I493 | Ventricular premature depolarization | H | Can lead a claim, code first applies |
| I4940 | Unspecified premature depolarization | H | Can lead a claim, code first applies |
| I4949 | Other premature depolarization | H | Can lead a claim, code first applies |
| I495 | Sick sinus syndrome | H | Can lead a claim, code first applies |
| I4981 | Brugada syndrome | H | Can lead a claim, code first applies |
| I4982 | Ventricular bigeminy | H | Can lead a claim, code first applies |
| I4989 | Other specified cardiac arrhythmias not elsewhere classified | H | Can lead a claim, code first applies |
| I499 | Cardiac arrhythmia, unspecified | H | Can lead a claim, code first applies |
| I501 | Left ventricular failure, unspecified | H | Can lead a claim, code first applies |
| I5020 | Unspecified systolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5021 | Acute systolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5022 | Chronic systolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5023 | Acute on chronic systolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5030 | Unspecified diastolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5031 | Acute diastolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5032 | Chronic diastolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5033 | Acute on chronic diastolic (congestive) heart failure | H | Can lead a claim, code first applies |
| I5040 | Unsp combined systolic and diastolic (congestive) hrt fail | H | Can lead a claim, code first applies |
| I5041 | Acute combined systolic and diastolic (congestive) hrt fail | H | Can lead a claim, code first applies |
| I5042 | Chronic combined systolic and diastolic hrt fail | H | Can lead a claim, code first applies |
| I5043 | Acute on chronic combined systolic and diastolic hrt fail | H | Can lead a claim, code first applies |
| I50810 | Right heart failure, unspecified | H | Can lead a claim, code first applies |
| I50811 | Acute right heart failure | H | Can lead a claim, code first applies |
| I50812 | Chronic right heart failure | H | Can lead a claim, code first applies |
| I50813 | Acute on chronic right heart failure | H | Can lead a claim, code first applies |
| I50814 | Right heart failure due to left heart failure | H | Can lead a claim, code first applies |
| I5082 | Biventricular heart failure | H | Can lead a claim, code first applies |
| I5083 | High output heart failure | H | Can lead a claim, code first applies |
| I5084 | End stage heart failure | H | Can lead a claim, code first applies |
| I5089 | Other heart failure | H | Can lead a claim, code first applies |
| I509 | Heart failure, unspecified | H | Can lead a claim, code first applies |
| I510 | Cardiac septal defect, acquired | H | Can lead a claim |
| I511 | Rupture of chordae tendineae, not elsewhere classified | H | Can lead a claim |
| I512 | Rupture of papillary muscle, not elsewhere classified | H | Can lead a claim |
| I513 | Intracardiac thrombosis, not elsewhere classified | H | Can lead a claim |
| I514 | Myocarditis, unspecified | H | Can lead a claim |
| I515 | Myocardial degeneration | H | Can lead a claim |
| I517 | Cardiomegaly | H | Can lead a claim |
| I5181 | Takotsubo syndrome | H | Can lead a claim |
| I5189 | Other ill-defined heart diseases | H | Can lead a claim |
| I519 | Heart disease, unspecified | H | Can lead a claim |
| I52 | Other heart disorders in diseases classified elsewhere | None | Cannot lead a claim |
| I5A | Non-ischemic myocardial injury (non-traumatic) | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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