ICD-10 · PDGM grouping
I45 Other conduction disorders
All 11 codes in the I45 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
11
Cannot lead a claim
0
What CMS assigns to I45
All 11 codes group to MMTA - Cardiac and Circulatory. None of the 11 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in I45
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 |
|---|---|---|---|---|
| I45.0 | Right fascicular block | Can lead a claim | H | None |
| I45.1 Other and unspecified right bundle-branch block | ||||
| I45.10 | Unspecified right bundle-branch block | Can lead a claim | H | None |
| I45.19 | Other right bundle-branch block | Can lead a claim | H | None |
| I45.2 | Bifascicular block | Can lead a claim | H | None |
| I45.3 | Trifascicular block | Can lead a claim | H | None |
| I45.4 | Nonspecific intraventricular block | Can lead a claim | H | None |
| I45.5 | Other specified heart block | Can lead a claim | H | None |
| I45.6 | Pre-excitation syndrome | Can lead a claim | H | None |
| I45.8 Other specified conduction disorders | ||||
| I45.81 | Long QT syndrome | Can lead a claim | H | None |
| I45.89 | Other specified conduction disorders | Can lead a claim | H | None |
| I45.9 | Conduction disorder, unspecified | Can lead a claim | H | 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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