ICD-10 · PDGM grouping

I95-I99 — Other and unspecified disorders of the circulatory system

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

43 of the 49 codes in I95-I99 group to MMTA - Cardiac and Circulatory, but the range is not uniform — it spreads across 3 clinical groups. A further 2 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.

Every code in I95-I99

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

Code	Description	Clinical group	Primary position
I950	Idiopathic hypotension	A	Accepted
I951	Orthostatic hypotension	A	Accepted
I952	Hypotension due to drugs	H	Accepted
I953	Hypotension of hemodialysis	H	Accepted
I9581	Postprocedural hypotension	H	Accepted
I9589	Other hypotension	H	Accepted
I959	Hypotension, unspecified	None	Cannot group
I96	Gangrene, not elsewhere classified	C	Accepted
I970	Postcardiotomy syndrome	H	Accepted
I97110	Postproc cardiac insufficiency following cardiac surgery	H	Accepted
I97111	Postprocedural cardiac insufficiency following other surgery	H	Accepted
I97120	Postprocedural cardiac arrest following cardiac surgery	H	Accepted
I97121	Postprocedural cardiac arrest following other surgery	H	Accepted
I97130	Postprocedural heart failure following cardiac surgery	H	Accepted
I97131	Postprocedural heart failure following other surgery	H	Accepted
I97190	Oth postproc cardiac functn disturb fol cardiac surgery	H	Accepted
I97191	Oth postproc cardiac functn disturb following oth surgery	H	Accepted
I972	Postmastectomy lymphedema syndrome	C	Accepted
I973	Postprocedural hypertension	H	Accepted
I97410	Intraoperative hemor/hemtom of a circ sys org comp card cath	H	Accepted
I97411	Intraop hemor/hemtom of a circ sys org comp card bypass	H	Accepted
I97418	Intraop hemor/hemtom of circ sys org comp oth circ sys proc	H	Accepted
I9742	Intraop hemor/hemtom of a circ sys org comp oth procedure	H	Accepted
I9751	Acc pnctr & lac of a circ sys org during a circ sys proc	H	Accepted
I9752	Acc pnctr & lac of a circ sys org during oth procedure	H	Accepted
I97610	Postproc hemor of a circ sys org following a cardiac cath	H	Accepted
I97611	Postproc hemor of a circ sys org following cardiac bypass	H	Accepted
I97618	Postproc hemor of a circ sys org fol other circ sys proc	H	Accepted
I97620	Postproc hemor of a circ sys org following other procedure	H	Accepted
I97621	Postproc hematoma of a circ sys org fol other procedure	H	Accepted
I97622	Postproc seroma of a circ sys org following other procedure	H	Accepted
I97630	Postproc hematoma of a circ sys org following a cardiac cath	H	Accepted
I97631	Postproc hematoma of a circ sys org following cardiac bypass	H	Accepted
I97638	Postproc hematoma of a circ sys org fol other circ sys proc	H	Accepted
I97640	Postproc seroma of a circ sys org following a cardiac cath	H	Accepted
I97641	Postproc seroma of a circ sys org following cardiac bypass	H	Accepted
I97648	Postproc seroma of a circ sys org fol other circ sys proc	H	Accepted
I97710	Intraoperative cardiac arrest during cardiac surgery	H	Accepted
I97711	Intraoperative cardiac arrest during other surgery	H	Accepted
I97790	Oth intraop cardiac functn disturb during cardiac surgery	H	Accepted
I97791	Oth intraop cardiac functional disturb during oth surgery	H	Accepted
I97810	Intraoperative cerebvasc infarction during cardiac surgery	H	Accepted
I97811	Intraoperative cerebrovascular infarction during oth surgery	H	Accepted
I97820	Postproc cerebvasc infarction following cardiac surgery	H	Accepted
I97821	Postprocedural cerebvasc infarction following other surgery	H	Accepted
I9788	Oth intraoperative complications of the circ sys, NEC	H	Accepted
I9789	Oth postproc comp and disorders of the circ sys, NEC	H	Accepted
I998	Other disorder of circulatory system	H	Accepted
I999	Unspecified disorder of circulatory system	None	Cannot group

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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I95-I99 — Other and unspecified disorders of the circulatory system

Where these codes group

Every code in I95-I99

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