ICD-10 · PDGM grouping

I20-I25 — Ischemic heart diseases

Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.

OASIS-E2 v1.00.0 · ingested 2026-04-26

Codes in range

No clinical group

A period cannot be grouped from these.

Barred as primary

CMS rejects these in the primary position.

Where these codes group

90 of the 94 codes in I20-I25 group to MMTA - Cardiac and Circulatory. A further 4 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.

HMMTA - Cardiac and Circulatory90

Every code in I20-I25

Descriptions are CMS’s own, abbreviated as CMS abbreviates them.

Code	Description	Clinical group	Primary position
I200	Unstable angina	H	Accepted
I201	Angina pectoris with documented spasm	H	Accepted
I202	Refractory angina pectoris	H	Accepted
I2081	Angina pectoris with coronary microvascular dysfunction	H	Accepted
I2089	Other forms of angina pectoris	H	Accepted
I209	Angina pectoris, unspecified	H	Accepted
I2101	STEMI involving left main coronary artery	H	Accepted
I2102	STEMI involving left anterior descending coronary artery	H	Accepted
I2109	STEMI involving oth coronary artery of anterior wall	H	Accepted
I2111	STEMI involving right coronary artery	H	Accepted
I2119	STEMI involving oth coronary artery of inferior wall	H	Accepted
I2121	STEMI involving left circumflex coronary artery	H	Accepted
I2129	STEMI involving oth sites	H	Accepted
I213	ST elevation (STEMI) myocardial infarction of unsp site	H	Accepted
I214	Non-ST elevation (NSTEMI) myocardial infarction	H	Accepted
I219	Acute myocardial infarction, unspecified	H	Accepted
I21A1	Myocardial infarction type 2	H	Accepted
I21A9	Other myocardial infarction type	H	Accepted
I21B	Myocardial infarction with coronary microvascular dysfnct	H	Accepted
I220	Subsequent STEMI of anterior wall	H	Accepted
I221	Subsequent STEMI of inferior wall	H	Accepted
I222	Subsequent non-ST elevation (NSTEMI) myocardial infarction	H	Accepted
I228	Subsequent STEMI of sites	H	Accepted
I229	Subsequent STEMI of unsp site	H	Accepted
I230	Hemopericardium as current complication following AMI	H	Accepted
I231	Atrial septal defect as current complication following AMI	H	Accepted
I232	Ventricular septal defect as current comp following AMI	H	Accepted
I233	Rupture of card wall w/o hemoperic as current comp fol AMI	H	Accepted
I234	Rupture of chord tendne as current comp following AMI	H	Accepted
I235	Rupture of papillary muscle as current comp following AMI	H	Accepted
I236	Thombos of atrium/auric append/ventr as current comp fol AMI	H	Accepted
I237	Postinfarction angina	H	Accepted
I238	Oth current complications following AMI	H	Accepted
I240	Acute coronary thrombosis not resulting in myocardial infrc	H	Accepted
I241	Dressler's syndrome	H	Accepted
I2481	Acute coronary microvascular dysfunction	H	Accepted
I2489	Other forms of acute ischemic heart disease	H	Accepted
I249	Acute ischemic heart disease, unspecified	H	Accepted
I2510	Athscl heart disease of native coronary artery w/o ang pctrs	H	Accepted
I25110	Athscl heart disease of native cor art w unstable ang pctrs	H	Accepted
I25111	Athscl heart disease of native cor art w ang pctrs w spasm	H	Accepted
I25112	Athscl heart dis of native cor art with refract ang pctrs	H	Accepted
I25118	Athscl heart disease of native cor art w oth ang pctrs	H	Accepted
I25119	Athscl heart disease of native cor art w unsp ang pctrs	H	Accepted
I252	Old myocardial infarction	None	Cannot group
I253	Aneurysm of heart	H	Accepted
I2541	Coronary artery aneurysm	H	Accepted
I2542	Coronary artery dissection	H	Accepted
I255	Ischemic cardiomyopathy	H	Accepted
I256	Silent myocardial ischemia	H	Accepted
I25700	Atherosclerosis of CABG, unsp, w unstable angina pectoris	H	Accepted
I25701	Athscl CABG, unsp, w angina pectoris w documented spasm	H	Accepted
I25702	Athscl CABG, unspecified, with refractory angina pectoris	H	Accepted
I25708	Atherosclerosis of CABG, unsp, w oth angina pectoris	H	Accepted
I25709	Atherosclerosis of CABG, unsp, w unsp angina pectoris	H	Accepted
I25710	Athscl autologous vein CABG w unstable angina pectoris	H	Accepted
I25711	Athscl autologous vein CABG w ang pctrs w documented spasm	H	Accepted
I25712	Athscl autologous vein CABG with refractory angina pectoris	H	Accepted
I25718	Athscl autologous vein CABG w oth angina pectoris	H	Accepted
I25719	Athscl autologous vein CABG w unsp angina pectoris	H	Accepted
I25720	Athscl autologous artery CABG w unstable angina pectoris	H	Accepted
I25721	Athscl autologous artery CABG w ang pctrs w documented spasm	H	Accepted
I25722	Athscl autologous artery CABG with refractory ang pctrs	H	Accepted
I25728	Athscl autologous artery CABG w oth angina pectoris	H	Accepted
I25729	Athscl autologous artery CABG w unsp angina pectoris	H	Accepted
I25730	Athscl nonautologous biological CABG w unstable ang pctrs	H	Accepted
I25731	Athscl nonaut biological CABG w ang pctrs w documented spasm	H	Accepted
I25732	Athscl nonaut biological CABG with refractory ang pctrs	H	Accepted
I25738	Athscl nonautologous biological CABG w oth angina pectoris	H	Accepted
I25739	Athscl nonautologous biological CABG w unsp angina pectoris	H	Accepted
I25750	Athscl native cor art of txplt heart w unstable angina	H	Accepted
I25751	Athscl native cor art of txplt heart w ang pctrs w spasm	H	Accepted
I25752	Athscl native cor art of txplt heart with refract ang pctrs	H	Accepted
I25758	Athscl native cor art of transplanted heart w oth ang pctrs	H	Accepted
I25759	Athscl native cor art of transplanted heart w unsp ang pctrs	H	Accepted
I25760	Athscl bypass of cor art of txplt heart w unstable angina	H	Accepted
I25761	Athscl bypass of cor art of txplt heart w ang pctrs w spasm	H	Accepted
I25762	Athscl bypass of cor art of txplt hrt with refract ang pctrs	H	Accepted
I25768	Athscl bypass of cor art of txplt heart w oth ang pctrs	H	Accepted
I25769	Athscl bypass of cor art of txplt heart w unsp ang pctrs	H	Accepted
I25790	Atherosclerosis of CABG w unstable angina pectoris	H	Accepted
I25791	Atherosclerosis of CABG w angina pectoris w documented spasm	H	Accepted
I25792	Athscl other CABG with refractory angina pectoris	H	Accepted
I25798	Atherosclerosis of CABG w oth angina pectoris	H	Accepted
I25799	Atherosclerosis of CABG w unsp angina pectoris	H	Accepted
I25810	Atherosclerosis of CABG w/o angina pectoris	H	Accepted
I25811	Athscl native cor art of transplanted heart w/o ang pctrs	H	Accepted
I25812	Athscl bypass of cor art of transplanted heart w/o ang pctrs	H	Accepted
I2582	Chronic total occlusion of coronary artery	None	Not accepted
I2583	Coronary atherosclerosis due to lipid rich plaque	None	Not accepted
I2584	Coronary atherosclerosis due to calcified coronary lesion	None	Not accepted
I2585	Chronic coronary microvascular dysfunction	H	Accepted
I2589	Other forms of chronic ischemic heart disease	H	Accepted
I259	Chronic ischemic heart disease, unspecified	H	Accepted

Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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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I20-I25 — Ischemic heart diseases

Where these codes group

Every code in I20-I25

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