ICD-10 · PDGM grouping
W85-W99 — Exposure to electric current, radiation and extreme ambient air temperature and pressure
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in range
99
No clinical group
99
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
None of the 99 codes in W85-W99 is assigned a PDGM clinical group. A 30-day period cannot be grouped from any of them, so none can hold the primary position on a home health claim.
Code families in W85-W99
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
- W85Exposure to electric transmission lines3 codes
- W86Exposure to other specified electric current9 codes
- W88Exposure to ionizing radiation9 codes
- W89Exposure to man-made visible and ultraviolet light12 codes
- W90Exposure to other nonionizing radiation12 codes
- W92Exposure to excessive heat of man-made origin3 codes
- W93Exposure to excessive cold of man-made origin18 codes
- W94Exposure to high and low air pressure and changes in air pressure30 codes
- W99Exposure to other man-made environmental factors3 codes
Every code in W85-W99
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| W85XXXA | Exposure to electric transmission lines, initial encounter | None | Cannot lead a claim |
| W85XXXD | Exposure to electric transmission lines, subs encntr | None | Cannot lead a claim |
| W85XXXS | Exposure to electric transmission lines, sequela | None | Cannot lead a claim |
| W860XXA | Exposure to domestic wiring and appliances, init encntr | None | Cannot lead a claim |
| W860XXD | Exposure to domestic wiring and appliances, subs encntr | None | Cannot lead a claim |
| W860XXS | Exposure to domestic wiring and appliances, sequela | None | Cannot lead a claim |
| W861XXA | Expsr to industr wiring, appliances & electrical mach, init | None | Cannot lead a claim |
| W861XXD | Expsr to industr wiring, appliances & electrical mach, subs | None | Cannot lead a claim |
| W861XXS | Expsr to industr wiring, appliances & electrical mach, sqla | None | Cannot lead a claim |
| W868XXA | Exposure to other electric current, initial encounter | None | Cannot lead a claim |
| W868XXD | Exposure to other electric current, subsequent encounter | None | Cannot lead a claim |
| W868XXS | Exposure to other electric current, sequela | None | Cannot lead a claim |
| W880XXA | Exposure to X-rays, initial encounter | None | Cannot lead a claim |
| W880XXD | Exposure to X-rays, subsequent encounter | None | Cannot lead a claim |
| W880XXS | Exposure to X-rays, sequela | None | Cannot lead a claim |
| W881XXA | Exposure to radioactive isotopes, initial encounter | None | Cannot lead a claim |
| W881XXD | Exposure to radioactive isotopes, subsequent encounter | None | Cannot lead a claim |
| W881XXS | Exposure to radioactive isotopes, sequela | None | Cannot lead a claim |
| W888XXA | Exposure to other ionizing radiation, initial encounter | None | Cannot lead a claim |
| W888XXD | Exposure to other ionizing radiation, subsequent encounter | None | Cannot lead a claim |
| W888XXS | Exposure to other ionizing radiation, sequela | None | Cannot lead a claim |
| W890XXA | Exposure to welding light (arc), initial encounter | None | Cannot lead a claim |
| W890XXD | Exposure to welding light (arc), subsequent encounter | None | Cannot lead a claim |
| W890XXS | Exposure to welding light (arc), sequela | None | Cannot lead a claim |
| W891XXA | Exposure to tanning bed, initial encounter | None | Cannot lead a claim |
| W891XXD | Exposure to tanning bed, subsequent encounter | None | Cannot lead a claim |
| W891XXS | Exposure to tanning bed, sequela | None | Cannot lead a claim |
| W898XXA | Exposure to oth man-made visible and ultraviolet light, init | None | Cannot lead a claim |
| W898XXD | Exposure to oth man-made visible and ultraviolet light, subs | None | Cannot lead a claim |
| W898XXS | Expsr to oth man-made visible and ultraviolet light, sequela | None | Cannot lead a claim |
| W899XXA | Expsr to unsp man-made visible and ultraviolet light, init | None | Cannot lead a claim |
| W899XXD | Expsr to unsp man-made visible and ultraviolet light, subs | None | Cannot lead a claim |
| W899XXS | Expsr to unsp man-made visible and ultraviolet light, sqla | None | Cannot lead a claim |
| W900XXA | Exposure to radiofrequency, initial encounter | None | Cannot lead a claim |
| W900XXD | Exposure to radiofrequency, subsequent encounter | None | Cannot lead a claim |
| W900XXS | Exposure to radiofrequency, sequela | None | Cannot lead a claim |
| W901XXA | Exposure to infrared radiation, initial encounter | None | Cannot lead a claim |
| W901XXD | Exposure to infrared radiation, subsequent encounter | None | Cannot lead a claim |
| W901XXS | Exposure to infrared radiation, sequela | None | Cannot lead a claim |
| W902XXA | Exposure to laser radiation, initial encounter | None | Cannot lead a claim |
| W902XXD | Exposure to laser radiation, subsequent encounter | None | Cannot lead a claim |
| W902XXS | Exposure to laser radiation, sequela | None | Cannot lead a claim |
| W908XXA | Exposure to other nonionizing radiation, initial encounter | None | Cannot lead a claim |
| W908XXD | Exposure to other nonionizing radiation, subs encntr | None | Cannot lead a claim |
| W908XXS | Exposure to other nonionizing radiation, sequela | None | Cannot lead a claim |
| W92XXXA | Exposure to excessive heat of man-made origin, init encntr | None | Cannot lead a claim |
| W92XXXD | Exposure to excessive heat of man-made origin, subs encntr | None | Cannot lead a claim |
| W92XXXS | Exposure to excessive heat of man-made origin, sequela | None | Cannot lead a claim |
| W9301XA | Contact with dry ice, initial encounter | None | Cannot lead a claim |
| W9301XD | Contact with dry ice, subsequent encounter | None | Cannot lead a claim |
| W9301XS | Contact with dry ice, sequela | None | Cannot lead a claim |
| W9302XA | Inhalation of dry ice, initial encounter | None | Cannot lead a claim |
| W9302XD | Inhalation of dry ice, subsequent encounter | None | Cannot lead a claim |
| W9302XS | Inhalation of dry ice, sequela | None | Cannot lead a claim |
| W9311XA | Contact with liquid air, initial encounter | None | Cannot lead a claim |
| W9311XD | Contact with liquid air, subsequent encounter | None | Cannot lead a claim |
| W9311XS | Contact with liquid air, sequela | None | Cannot lead a claim |
| W9312XA | Inhalation of liquid air, initial encounter | None | Cannot lead a claim |
| W9312XD | Inhalation of liquid air, subsequent encounter | None | Cannot lead a claim |
| W9312XS | Inhalation of liquid air, sequela | None | Cannot lead a claim |
| W932XXA | Prolonged exposure in deep freeze unit or refrigerator, init | None | Cannot lead a claim |
| W932XXD | Prolonged exposure in deep freeze unit or refrigerator, subs | None | Cannot lead a claim |
| W932XXS | Prolonged exposure in deep freeze unit or refrig, sequela | None | Cannot lead a claim |
| W938XXA | Exposure to oth excessive cold of man-made origin, init | None | Cannot lead a claim |
| W938XXD | Exposure to oth excessive cold of man-made origin, subs | None | Cannot lead a claim |
| W938XXS | Exposure to other excessive cold of man-made origin, sequela | None | Cannot lead a claim |
| W940XXA | Exposure to prolonged high air pressure, initial encounter | None | Cannot lead a claim |
| W940XXD | Exposure to prolonged high air pressure, subs encntr | None | Cannot lead a claim |
| W940XXS | Exposure to prolonged high air pressure, sequela | None | Cannot lead a claim |
| W9411XA | Expsr to resdnce or prolonged visit at high altitude, init | None | Cannot lead a claim |
| W9411XD | Expsr to resdnce or prolonged visit at high altitude, subs | None | Cannot lead a claim |
| W9411XS | Expsr to resdnce or prolonged visit at high altitude, sqla | None | Cannot lead a claim |
| W9412XA | Exposure to other prolonged low air pressure, init encntr | None | Cannot lead a claim |
| W9412XD | Exposure to other prolonged low air pressure, subs encntr | None | Cannot lead a claim |
| W9412XS | Exposure to other prolonged low air pressure, sequela | None | Cannot lead a claim |
| W9421XA | Expsr to rdct in atmos pressr wh surfc fr dp-watr div, init | None | Cannot lead a claim |
| W9421XD | Expsr to rdct in atmos pressr wh surfc fr dp-watr div, subs | None | Cannot lead a claim |
| W9421XS | Expsr to rdct in atmos pressr wh surfc fr dp-watr div, sqla | None | Cannot lead a claim |
| W9422XA | Expsr to rdct in atmos pressr wh surfc fr underground, init | None | Cannot lead a claim |
| W9422XD | Expsr to rdct in atmos pressr wh surfc fr underground, subs | None | Cannot lead a claim |
| W9422XS | Expsr to rdct in atmos pressr wh surfc fr underground, sqla | None | Cannot lead a claim |
| W9423XA | Expsr to chng in air pressure in arcrft during ascent, init | None | Cannot lead a claim |
| W9423XD | Expsr to chng in air pressure in arcrft during ascent, subs | None | Cannot lead a claim |
| W9423XS | Expsr to chng in air pressr in arcrft during ascent, sequela | None | Cannot lead a claim |
| W9429XA | Expsr to oth rapid changes in air pressr during ascent, init | None | Cannot lead a claim |
| W9429XD | Expsr to oth rapid changes in air pressr during ascent, subs | None | Cannot lead a claim |
| W9429XS | Expsr to oth rapid changes in air pressr during ascent, sqla | None | Cannot lead a claim |
| W9431XA | Expsr to chng in air pressure in arcrft during descent, init | None | Cannot lead a claim |
| W9431XD | Expsr to chng in air pressure in arcrft during descent, subs | None | Cannot lead a claim |
| W9431XS | Expsr to chng in air pressr in arcrft during descent, sqla | None | Cannot lead a claim |
| W9432XA | Expsr to high air pressure from rapid descent in water, init | None | Cannot lead a claim |
| W9432XD | Expsr to high air pressure from rapid descent in water, subs | None | Cannot lead a claim |
| W9432XS | Expsr to high air pressr from rapid descent in water, sqla | None | Cannot lead a claim |
| W9439XA | Expsr to oth rapid changes in air pressr dur descent, init | None | Cannot lead a claim |
| W9439XD | Expsr to oth rapid changes in air pressr dur descent, subs | None | Cannot lead a claim |
| W9439XS | Expsr to oth rapid changes in air pressr dur descent, sqla | None | Cannot lead a claim |
| W99XXXA | Exposure to oth man-made environmental factors, init encntr | None | Cannot lead a claim |
| W99XXXD | Exposure to oth man-made environmental factors, subs encntr | None | Cannot lead a claim |
| W99XXXS | Exposure to other man-made environmental factors, sequela | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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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