ICD-10 · PDGM grouping
T33-T34 — Frostbite
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
222
No clinical group
66
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
156 of the 222 codes in T33-T34 group to MMTA - Other. A further 66 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in T33-T34
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| T33011A | Superficial frostbite of right ear, initial encounter | A | Accepted |
| T33011D | Superficial frostbite of right ear, subsequent encounter | A | Accepted |
| T33011S | Superficial frostbite of right ear, sequela | A | Accepted |
| T33012A | Superficial frostbite of left ear, initial encounter | A | Accepted |
| T33012D | Superficial frostbite of left ear, subsequent encounter | A | Accepted |
| T33012S | Superficial frostbite of left ear, sequela | A | Accepted |
| T33019A | Superficial frostbite of unspecified ear, initial encounter | None | Too unspecified |
| T33019D | Superficial frostbite of unspecified ear, subs encntr | None | Cannot group |
| T33019S | Superficial frostbite of unspecified ear, sequela | None | Cannot group |
| T3302XA | Superficial frostbite of nose, initial encounter | A | Accepted |
| T3302XD | Superficial frostbite of nose, subsequent encounter | A | Accepted |
| T3302XS | Superficial frostbite of nose, sequela | A | Accepted |
| T3309XA | Superficial frostbite of other part of head, init encntr | A | Accepted |
| T3309XD | Superficial frostbite of other part of head, subs encntr | A | Accepted |
| T3309XS | Superficial frostbite of other part of head, sequela | A | Accepted |
| T331XXA | Superficial frostbite of neck, initial encounter | A | Accepted |
| T331XXD | Superficial frostbite of neck, subsequent encounter | A | Accepted |
| T331XXS | Superficial frostbite of neck, sequela | A | Accepted |
| T332XXA | Superficial frostbite of thorax, initial encounter | A | Accepted |
| T332XXD | Superficial frostbite of thorax, subsequent encounter | A | Accepted |
| T332XXS | Superficial frostbite of thorax, sequela | A | Accepted |
| T333XXA | Superfic frostbite of abd wall, lower back and pelvis, init | A | Accepted |
| T333XXD | Superfic frostbite of abd wall, lower back and pelvis, subs | A | Accepted |
| T333XXS | Superfic frostbite of abd wall, low back and pelvis, sequela | A | Accepted |
| T3340XA | Superficial frostbite of unspecified arm, initial encounter | None | Too unspecified |
| T3340XD | Superficial frostbite of unspecified arm, subs encntr | None | Cannot group |
| T3340XS | Superficial frostbite of unspecified arm, sequela | None | Cannot group |
| T3341XA | Superficial frostbite of right arm, initial encounter | A | Accepted |
| T3341XD | Superficial frostbite of right arm, subsequent encounter | A | Accepted |
| T3341XS | Superficial frostbite of right arm, sequela | A | Accepted |
| T3342XA | Superficial frostbite of left arm, initial encounter | A | Accepted |
| T3342XD | Superficial frostbite of left arm, subsequent encounter | A | Accepted |
| T3342XS | Superficial frostbite of left arm, sequela | A | Accepted |
| T33511A | Superficial frostbite of right wrist, initial encounter | A | Accepted |
| T33511D | Superficial frostbite of right wrist, subsequent encounter | A | Accepted |
| T33511S | Superficial frostbite of right wrist, sequela | A | Accepted |
| T33512A | Superficial frostbite of left wrist, initial encounter | A | Accepted |
| T33512D | Superficial frostbite of left wrist, subsequent encounter | A | Accepted |
| T33512S | Superficial frostbite of left wrist, sequela | A | Accepted |
| T33519A | Superficial frostbite of unspecified wrist, init encntr | None | Too unspecified |
| T33519D | Superficial frostbite of unspecified wrist, subs encntr | None | Cannot group |
| T33519S | Superficial frostbite of unspecified wrist, sequela | None | Cannot group |
| T33521A | Superficial frostbite of right hand, initial encounter | A | Accepted |
| T33521D | Superficial frostbite of right hand, subsequent encounter | A | Accepted |
| T33521S | Superficial frostbite of right hand, sequela | A | Accepted |
| T33522A | Superficial frostbite of left hand, initial encounter | A | Accepted |
| T33522D | Superficial frostbite of left hand, subsequent encounter | A | Accepted |
| T33522S | Superficial frostbite of left hand, sequela | A | Accepted |
| T33529A | Superficial frostbite of unspecified hand, initial encounter | None | Too unspecified |
| T33529D | Superficial frostbite of unspecified hand, subs encntr | None | Cannot group |
| T33529S | Superficial frostbite of unspecified hand, sequela | None | Cannot group |
| T33531A | Superficial frostbite of right finger(s), initial encounter | A | Accepted |
| T33531D | Superficial frostbite of right finger(s), subs encntr | A | Accepted |
| T33531S | Superficial frostbite of right finger(s), sequela | A | Accepted |
| T33532A | Superficial frostbite of left finger(s), initial encounter | A | Accepted |
| T33532D | Superficial frostbite of left finger(s), subs encntr | A | Accepted |
| T33532S | Superficial frostbite of left finger(s), sequela | A | Accepted |
| T33539A | Superficial frostbite of unspecified finger(s), init encntr | None | Too unspecified |
| T33539D | Superficial frostbite of unspecified finger(s), subs encntr | None | Cannot group |
| T33539S | Superficial frostbite of unspecified finger(s), sequela | None | Cannot group |
| T3360XA | Superficial frostbite of unsp hip and thigh, init encntr | None | Too unspecified |
| T3360XD | Superficial frostbite of unsp hip and thigh, subs encntr | None | Cannot group |
| T3360XS | Superficial frostbite of unspecified hip and thigh, sequela | None | Cannot group |
| T3361XA | Superficial frostbite of right hip and thigh, init encntr | A | Accepted |
| T3361XD | Superficial frostbite of right hip and thigh, subs encntr | A | Accepted |
| T3361XS | Superficial frostbite of right hip and thigh, sequela | A | Accepted |
| T3362XA | Superficial frostbite of left hip and thigh, init encntr | A | Accepted |
| T3362XD | Superficial frostbite of left hip and thigh, subs encntr | A | Accepted |
| T3362XS | Superficial frostbite of left hip and thigh, sequela | A | Accepted |
| T3370XA | Superficial frostbite of unsp knee and lower leg, init | None | Too unspecified |
| T3370XD | Superficial frostbite of unsp knee and lower leg, subs | None | Cannot group |
| T3370XS | Superficial frostbite of unsp knee and lower leg, sequela | None | Cannot group |
| T3371XA | Superficial frostbite of right knee and lower leg, init | A | Accepted |
| T3371XD | Superficial frostbite of right knee and lower leg, subs | A | Accepted |
| T3371XS | Superficial frostbite of right knee and lower leg, sequela | A | Accepted |
| T3372XA | Superficial frostbite of left knee and lower leg, init | A | Accepted |
| T3372XD | Superficial frostbite of left knee and lower leg, subs | A | Accepted |
| T3372XS | Superficial frostbite of left knee and lower leg, sequela | A | Accepted |
| T33811A | Superficial frostbite of right ankle, initial encounter | A | Accepted |
| T33811D | Superficial frostbite of right ankle, subsequent encounter | A | Accepted |
| T33811S | Superficial frostbite of right ankle, sequela | A | Accepted |
| T33812A | Superficial frostbite of left ankle, initial encounter | A | Accepted |
| T33812D | Superficial frostbite of left ankle, subsequent encounter | A | Accepted |
| T33812S | Superficial frostbite of left ankle, sequela | A | Accepted |
| T33819A | Superficial frostbite of unspecified ankle, init encntr | None | Too unspecified |
| T33819D | Superficial frostbite of unspecified ankle, subs encntr | None | Cannot group |
| T33819S | Superficial frostbite of unspecified ankle, sequela | None | Cannot group |
| T33821A | Superficial frostbite of right foot, initial encounter | A | Accepted |
| T33821D | Superficial frostbite of right foot, subsequent encounter | A | Accepted |
| T33821S | Superficial frostbite of right foot, sequela | A | Accepted |
| T33822A | Superficial frostbite of left foot, initial encounter | A | Accepted |
| T33822D | Superficial frostbite of left foot, subsequent encounter | A | Accepted |
| T33822S | Superficial frostbite of left foot, sequela | A | Accepted |
| T33829A | Superficial frostbite of unspecified foot, initial encounter | None | Too unspecified |
| T33829D | Superficial frostbite of unspecified foot, subs encntr | None | Cannot group |
| T33829S | Superficial frostbite of unspecified foot, sequela | None | Cannot group |
| T33831A | Superficial frostbite of right toe(s), initial encounter | A | Accepted |
| T33831D | Superficial frostbite of right toe(s), subsequent encounter | A | Accepted |
| T33831S | Superficial frostbite of right toe(s), sequela | A | Accepted |
| T33832A | Superficial frostbite of left toe(s), initial encounter | A | Accepted |
| T33832D | Superficial frostbite of left toe(s), subsequent encounter | A | Accepted |
| T33832S | Superficial frostbite of left toe(s), sequela | A | Accepted |
| T33839A | Superficial frostbite of unspecified toe(s), init encntr | None | Too unspecified |
| T33839D | Superficial frostbite of unspecified toe(s), subs encntr | None | Cannot group |
| T33839S | Superficial frostbite of unspecified toe(s), sequela | None | Cannot group |
| T3390XA | Superficial frostbite of unspecified sites, init encntr | None | Too unspecified |
| T3390XD | Superficial frostbite of unspecified sites, subs encntr | None | Cannot group |
| T3390XS | Superficial frostbite of unspecified sites, sequela | None | Cannot group |
| T3399XA | Superficial frostbite of other sites, initial encounter | A | Accepted |
| T3399XD | Superficial frostbite of other sites, subsequent encounter | A | Accepted |
| T3399XS | Superficial frostbite of other sites, sequela | A | Accepted |
| T34011A | Frostbite with tissue necrosis of right ear, init encntr | A | Accepted |
| T34011D | Frostbite with tissue necrosis of right ear, subs encntr | A | Accepted |
| T34011S | Frostbite with tissue necrosis of right ear, sequela | A | Accepted |
| T34012A | Frostbite with tissue necrosis of left ear, init encntr | A | Accepted |
| T34012D | Frostbite with tissue necrosis of left ear, subs encntr | A | Accepted |
| T34012S | Frostbite with tissue necrosis of left ear, sequela | A | Accepted |
| T34019A | Frostbite with tissue necrosis of unsp ear, init encntr | None | Too unspecified |
| T34019D | Frostbite with tissue necrosis of unsp ear, subs encntr | None | Cannot group |
| T34019S | Frostbite with tissue necrosis of unspecified ear, sequela | None | Cannot group |
| T3402XA | Frostbite with tissue necrosis of nose, initial encounter | A | Accepted |
| T3402XD | Frostbite with tissue necrosis of nose, subsequent encounter | A | Accepted |
| T3402XS | Frostbite with tissue necrosis of nose, sequela | A | Accepted |
| T3409XA | Frostbite w tissue necrosis of oth part of head, init encntr | A | Accepted |
| T3409XD | Frostbite w tissue necrosis of oth part of head, subs encntr | A | Accepted |
| T3409XS | Frostbite with tissue necrosis of oth part of head, sequela | A | Accepted |
| T341XXA | Frostbite with tissue necrosis of neck, initial encounter | A | Accepted |
| T341XXD | Frostbite with tissue necrosis of neck, subsequent encounter | A | Accepted |
| T341XXS | Frostbite with tissue necrosis of neck, sequela | A | Accepted |
| T342XXA | Frostbite with tissue necrosis of thorax, initial encounter | A | Accepted |
| T342XXD | Frostbite with tissue necrosis of thorax, subs encntr | A | Accepted |
| T342XXS | Frostbite with tissue necrosis of thorax, sequela | A | Accepted |
| T343XXA | Frstbte w tissue necros abd wall, low back and pelvis, init | A | Accepted |
| T343XXD | Frstbte w tissue necros abd wall, low back and pelvis, subs | A | Accepted |
| T343XXS | Frstbte w tissue necros abd wall, low back and pelvis, sqla | A | Accepted |
| T3440XA | Frostbite with tissue necrosis of unsp arm, init encntr | None | Too unspecified |
| T3440XD | Frostbite with tissue necrosis of unsp arm, subs encntr | None | Cannot group |
| T3440XS | Frostbite with tissue necrosis of unspecified arm, sequela | None | Cannot group |
| T3441XA | Frostbite with tissue necrosis of right arm, init encntr | A | Accepted |
| T3441XD | Frostbite with tissue necrosis of right arm, subs encntr | A | Accepted |
| T3441XS | Frostbite with tissue necrosis of right arm, sequela | A | Accepted |
| T3442XA | Frostbite with tissue necrosis of left arm, init encntr | A | Accepted |
| T3442XD | Frostbite with tissue necrosis of left arm, subs encntr | A | Accepted |
| T3442XS | Frostbite with tissue necrosis of left arm, sequela | A | Accepted |
| T34511A | Frostbite with tissue necrosis of right wrist, init encntr | A | Accepted |
| T34511D | Frostbite with tissue necrosis of right wrist, subs encntr | A | Accepted |
| T34511S | Frostbite with tissue necrosis of right wrist, sequela | A | Accepted |
| T34512A | Frostbite with tissue necrosis of left wrist, init encntr | A | Accepted |
| T34512D | Frostbite with tissue necrosis of left wrist, subs encntr | A | Accepted |
| T34512S | Frostbite with tissue necrosis of left wrist, sequela | A | Accepted |
| T34519A | Frostbite with tissue necrosis of unsp wrist, init encntr | None | Too unspecified |
| T34519D | Frostbite with tissue necrosis of unsp wrist, subs encntr | None | Cannot group |
| T34519S | Frostbite with tissue necrosis of unspecified wrist, sequela | None | Cannot group |
| T34521A | Frostbite with tissue necrosis of right hand, init encntr | A | Accepted |
| T34521D | Frostbite with tissue necrosis of right hand, subs encntr | A | Accepted |
| T34521S | Frostbite with tissue necrosis of right hand, sequela | A | Accepted |
| T34522A | Frostbite with tissue necrosis of left hand, init encntr | A | Accepted |
| T34522D | Frostbite with tissue necrosis of left hand, subs encntr | A | Accepted |
| T34522S | Frostbite with tissue necrosis of left hand, sequela | A | Accepted |
| T34529A | Frostbite with tissue necrosis of unsp hand, init encntr | None | Too unspecified |
| T34529D | Frostbite with tissue necrosis of unsp hand, subs encntr | None | Cannot group |
| T34529S | Frostbite with tissue necrosis of unspecified hand, sequela | None | Cannot group |
| T34531A | Frostbite w tissue necrosis of right finger(s), init encntr | A | Accepted |
| T34531D | Frostbite w tissue necrosis of right finger(s), subs encntr | A | Accepted |
| T34531S | Frostbite with tissue necrosis of right finger(s), sequela | A | Accepted |
| T34532A | Frostbite w tissue necrosis of left finger(s), init encntr | A | Accepted |
| T34532D | Frostbite w tissue necrosis of left finger(s), subs encntr | A | Accepted |
| T34532S | Frostbite with tissue necrosis of left finger(s), sequela | A | Accepted |
| T34539A | Frostbite w tissue necrosis of unsp finger(s), init encntr | None | Too unspecified |
| T34539D | Frostbite w tissue necrosis of unsp finger(s), subs encntr | None | Cannot group |
| T34539S | Frostbite with tissue necrosis of unsp finger(s), sequela | None | Cannot group |
| T3460XA | Frostbite w tissue necrosis of unsp hip and thigh, init | None | Too unspecified |
| T3460XD | Frostbite w tissue necrosis of unsp hip and thigh, subs | None | Cannot group |
| T3460XS | Frostbite w tissue necrosis of unsp hip and thigh, sequela | None | Cannot group |
| T3461XA | Frostbite w tissue necrosis of right hip and thigh, init | A | Accepted |
| T3461XD | Frostbite w tissue necrosis of right hip and thigh, subs | A | Accepted |
| T3461XS | Frostbite w tissue necrosis of right hip and thigh, sequela | A | Accepted |
| T3462XA | Frostbite w tissue necrosis of left hip and thigh, init | A | Accepted |
| T3462XD | Frostbite w tissue necrosis of left hip and thigh, subs | A | Accepted |
| T3462XS | Frostbite w tissue necrosis of left hip and thigh, sequela | A | Accepted |
| T3470XA | Frostbite w tissue necrosis of unsp knee and lower leg, init | None | Too unspecified |
| T3470XD | Frostbite w tissue necrosis of unsp knee and lower leg, subs | None | Cannot group |
| T3470XS | Frostbite w tissue necros unsp knee and lower leg, sequela | None | Cannot group |
| T3471XA | Frostbite w tissue necros right knee and lower leg, init | A | Accepted |
| T3471XD | Frostbite w tissue necros right knee and lower leg, subs | A | Accepted |
| T3471XS | Frostbite w tissue necros right knee and lower leg, sequela | A | Accepted |
| T3472XA | Frostbite w tissue necrosis of left knee and lower leg, init | A | Accepted |
| T3472XD | Frostbite w tissue necrosis of left knee and lower leg, subs | A | Accepted |
| T3472XS | Frostbite w tissue necros left knee and lower leg, sequela | A | Accepted |
| T34811A | Frostbite with tissue necrosis of right ankle, init encntr | A | Accepted |
| T34811D | Frostbite with tissue necrosis of right ankle, subs encntr | A | Accepted |
| T34811S | Frostbite with tissue necrosis of right ankle, sequela | A | Accepted |
| T34812A | Frostbite with tissue necrosis of left ankle, init encntr | A | Accepted |
| T34812D | Frostbite with tissue necrosis of left ankle, subs encntr | A | Accepted |
| T34812S | Frostbite with tissue necrosis of left ankle, sequela | A | Accepted |
| T34819A | Frostbite with tissue necrosis of unsp ankle, init encntr | None | Too unspecified |
| T34819D | Frostbite with tissue necrosis of unsp ankle, subs encntr | None | Cannot group |
| T34819S | Frostbite with tissue necrosis of unspecified ankle, sequela | None | Cannot group |
| T34821A | Frostbite with tissue necrosis of right foot, init encntr | A | Accepted |
| T34821D | Frostbite with tissue necrosis of right foot, subs encntr | A | Accepted |
| T34821S | Frostbite with tissue necrosis of right foot, sequela | A | Accepted |
| T34822A | Frostbite with tissue necrosis of left foot, init encntr | A | Accepted |
| T34822D | Frostbite with tissue necrosis of left foot, subs encntr | A | Accepted |
| T34822S | Frostbite with tissue necrosis of left foot, sequela | A | Accepted |
| T34829A | Frostbite with tissue necrosis of unsp foot, init encntr | None | Too unspecified |
| T34829D | Frostbite with tissue necrosis of unsp foot, subs encntr | None | Cannot group |
| T34829S | Frostbite with tissue necrosis of unspecified foot, sequela | None | Cannot group |
| T34831A | Frostbite with tissue necrosis of right toe(s), init encntr | A | Accepted |
| T34831D | Frostbite with tissue necrosis of right toe(s), subs encntr | A | Accepted |
| T34831S | Frostbite with tissue necrosis of right toe(s), sequela | A | Accepted |
| T34832A | Frostbite with tissue necrosis of left toe(s), init encntr | A | Accepted |
| T34832D | Frostbite with tissue necrosis of left toe(s), subs encntr | A | Accepted |
| T34832S | Frostbite with tissue necrosis of left toe(s), sequela | A | Accepted |
| T34839A | Frostbite with tissue necrosis of unsp toe(s), init encntr | None | Too unspecified |
| T34839D | Frostbite with tissue necrosis of unsp toe(s), subs encntr | None | Cannot group |
| T34839S | Frostbite with tissue necrosis of unsp toe(s), sequela | None | Cannot group |
| T3490XA | Frostbite with tissue necrosis of unsp sites, init encntr | None | Too unspecified |
| T3490XD | Frostbite with tissue necrosis of unsp sites, subs encntr | None | Cannot group |
| T3490XS | Frostbite with tissue necrosis of unspecified sites, sequela | None | Cannot group |
| T3499XA | Frostbite with tissue necrosis of other sites, init encntr | A | Accepted |
| T3499XD | Frostbite with tissue necrosis of other sites, subs encntr | A | Accepted |
| T3499XS | Frostbite with tissue necrosis of other sites, sequela | A | 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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