October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

V44 Car occupant injured in collision with heavy transport vehicle or bus

All 27 codes in the V44 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.

ICD-10-CM FY2027 · CMS grouper v07.2.26

Codes in family

27

Can lead a claim

0

Cannot lead a claim

27

What CMS assigns to V44

None of the 27 codes is assigned a clinical group. None of the 27 is assigned a comorbidity subgroup. None can lead a claim.

Every code in V44

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
V44.0 Car driver injured in collision with heavy transport vehicle or bus in nontraffic accident
V44.0XXACar driver injured in collision with heavy transport vehicle or bus in nontraffic accident, initial encounterCMS: Car driver injured in collision w hv veh nontraf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.0XXDCar driver injured in collision with heavy transport vehicle or bus in nontraffic accident, subsequent encounterCMS: Car driver injured in collision w hv veh nontraf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.0XXSCar driver injured in collision with heavy transport vehicle or bus in nontraffic accident, sequelaCMS: Car driver injured in collision w hv veh nontraf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.1 Car passenger injured in collision with heavy transport vehicle or bus in nontraffic accident
V44.1XXACar passenger injured in collision with heavy transport vehicle or bus in nontraffic accident, initial encounterCMS: Car passenger injured in collision w hv veh nontraf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.1XXDCar passenger injured in collision with heavy transport vehicle or bus in nontraffic accident, subsequent encounterCMS: Car passenger injured in collision w hv veh nontraf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.1XXSCar passenger injured in collision with heavy transport vehicle or bus in nontraffic accident, sequelaCMS: Car passenger injured in collision w hv veh nontraf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.2 Person on outside of car injured in collision with heavy transport vehicle or bus in nontraffic accident
V44.2XXAPerson on outside of car injured in collision with heavy transport vehicle or bus in nontraffic accident, initial encounterCMS: Person outside car injured in clsn w hv veh nontraf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.2XXDPerson on outside of car injured in collision with heavy transport vehicle or bus in nontraffic accident, subsequent encounterCMS: Person outside car injured in clsn w hv veh nontraf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.2XXSPerson on outside of car injured in collision with heavy transport vehicle or bus in nontraffic accident, sequelaCMS: Person outside car injured in clsn w hv veh nontraf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.3 Unspecified car occupant injured in collision with heavy transport vehicle or bus in nontraffic accident
V44.3XXAUnspecified car occupant injured in collision with heavy transport vehicle or bus in nontraffic accident, initial encounterCMS: Unsp car occupant injured in clsn w hv veh nontraf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.3XXDUnspecified car occupant injured in collision with heavy transport vehicle or bus in nontraffic accident, subsequent encounterCMS: Unsp car occupant injured in clsn w hv veh nontraf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.3XXSUnspecified car occupant injured in collision with heavy transport vehicle or bus in nontraffic accident, sequelaCMS: Unsp car occupant injured in clsn w hv veh nontraf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.4 Person boarding or alighting a car injured in collision with heavy transport vehicle or bus
V44.4XXAPerson boarding or alighting a car injured in collision with heavy transport vehicle or bus, initial encounterCMS: Prsn brd/alit a car injured in collision w hv veh, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.4XXDPerson boarding or alighting a car injured in collision with heavy transport vehicle or bus, subsequent encounterCMS: Prsn brd/alit a car injured in collision w hv veh, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.4XXSPerson boarding or alighting a car injured in collision with heavy transport vehicle or bus, sequelaCMS: Prsn brd/alit a car injured in collision w hv veh, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.5 Car driver injured in collision with heavy transport vehicle or bus in traffic accident
V44.5XXACar driver injured in collision with heavy transport vehicle or bus in traffic accident, initial encounterCMS: Car driver injured in collision w hv veh in traf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.5XXDCar driver injured in collision with heavy transport vehicle or bus in traffic accident, subsequent encounterCMS: Car driver injured in collision w hv veh in traf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.5XXSCar driver injured in collision with heavy transport vehicle or bus in traffic accident, sequelaCMS: Car driver injured in collision w hv veh in traf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.6 Car passenger injured in collision with heavy transport vehicle or bus in traffic accident
V44.6XXACar passenger injured in collision with heavy transport vehicle or bus in traffic accident, initial encounterCMS: Car passenger injured in collision w hv veh in traf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.6XXDCar passenger injured in collision with heavy transport vehicle or bus in traffic accident, subsequent encounterCMS: Car passenger injured in collision w hv veh in traf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.6XXSCar passenger injured in collision with heavy transport vehicle or bus in traffic accident, sequelaCMS: Car passenger injured in collision w hv veh in traf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.7 Person on outside of car injured in collision with heavy transport vehicle or bus in traffic accident
V44.7XXAPerson on outside of car injured in collision with heavy transport vehicle or bus in traffic accident, initial encounterCMS: Person outside car injured in clsn w hv veh in traf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.7XXDPerson on outside of car injured in collision with heavy transport vehicle or bus in traffic accident, subsequent encounterCMS: Person outside car injured in clsn w hv veh in traf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.7XXSPerson on outside of car injured in collision with heavy transport vehicle or bus in traffic accident, sequelaCMS: Person outside car injured in clsn w hv veh in traf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.9 Unspecified car occupant injured in collision with heavy transport vehicle or bus in traffic accident
V44.9XXAUnspecified car occupant injured in collision with heavy transport vehicle or bus in traffic accident, initial encounterCMS: Unsp car occupant injured in clsn w hv veh in traf, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.9XXDUnspecified car occupant injured in collision with heavy transport vehicle or bus in traffic accident, subsequent encounterCMS: Unsp car occupant injured in clsn w hv veh in traf, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
V44.9XXSUnspecified car occupant injured in collision with heavy transport vehicle or bus in traffic accident, sequelaCMS: Unsp car occupant injured in clsn w hv veh in traf, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone

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.

The monthly home health regs digest

What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue