ICD-10 · PDGM grouping
I74 Arterial embolism and thrombosis
All 11 codes in the I74 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
11
Can lead a claim
9
Cannot lead a claim
2
What CMS assigns to I74
9 of the 11 codes group to MMTA - Cardiac and Circulatory; 2 are assigned no clinical group. None of the 11 is assigned a comorbidity subgroup. 9 of the 11 can lead a claim. CMS attaches a code-first note to all 11.
Code first
CMS grouper convention 79, on all 11 codes. Code first:
- embolism and thrombosis complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)
- embolism and thrombosis complicating pregnancy, childbirth and the puerperium (O88.-)
Every code in I74
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| I74.0 Embolism and thrombosis of abdominal aorta | ||||
| I74.01 | Saddle embolus of abdominal aorta | Can lead a claim, code first applies | H | None |
| I74.09 | Other arterial embolism and thrombosis of abdominal aorta | Can lead a claim, code first applies | H | None |
| I74.1 Embolism and thrombosis of other and unspecified parts of aorta | ||||
| I74.10 | Embolism and thrombosis of unspecified parts of aorta | Can lead a claim, code first applies | H | None |
| I74.11 | Embolism and thrombosis of thoracic aorta | Can lead a claim, code first applies | H | None |
| I74.19 | Embolism and thrombosis of other parts of aorta | Can lead a claim, code first applies | H | None |
| I74.2 | Embolism and thrombosis of arteries of the upper extremities | Can lead a claim, code first applies | H | None |
| I74.3 | Embolism and thrombosis of arteries of the lower extremities | Can lead a claim, code first applies | H | None |
| I74.4 | Embolism and thrombosis of arteries of extremities, unspecifiedCMS: Embolism and thrombosis of arteries of extremities, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| I74.5 | Embolism and thrombosis of iliac artery | Can lead a claim, code first applies | H | None |
| I74.8 | Embolism and thrombosis of other arteries | Can lead a claim, code first applies | H | None |
| I74.9 | Embolism and thrombosis of unspecified artery | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. 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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