W94.11XA is the authoritative medical code for Exposure to residence or prolonged visit at high altitude, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for exposure to residence or prolonged visit at high altitude, initial encounter (ICD-10-CM W94.11XA), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Exposure to residence or prolonged visit at high altitude, initial encounter W94.11XA is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category W94 (Exposure to high and low air pressure and changes in air pressure), within the Exposure to electric current, radiation and extreme ambient air temperature and pressure W85-W99 block, within Chapter 20, External Causes of Morbidity V00-Y99. The official tabular list attaches no additional inclusion or exclusion notes to this code.
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as W94.11XA, with their registry titles.
- W94 — Exposure to high and low air pressure and changes in air pressure
- W94.0 — Exposure to prolonged high air pressure
- W94.0A — Exposure to prolonged high air pressure, initial encounter
- W94.0D — Exposure to prolonged high air pressure, subsequent encounter
- W94.0S — Exposure to prolonged high air pressure, sequela
- W94.0XXA — Exposure to prolonged high air pressure, initial encounter
- W94.0XXD — Exposure to prolonged high air pressure, subsequent encounter
- W94.0XXS — Exposure to prolonged high air pressure, sequela
- W94.1 — Exposure to prolonged low air pressure
- W94.11 — Exposure to residence or prolonged visit at high altitude
- W94.11A — Exposure to residence or prolonged visit at high altitude, initial encounter
- W94.11D — Exposure to residence or prolonged visit at high altitude, subsequent encounter
- W94.11S — Exposure to residence or prolonged visit at high altitude, sequela
- W94.11XD — Exposure to residence or prolonged visit at high altitude, subsequent encounter
- W94.11XS — Exposure to residence or prolonged visit at high altitude, sequela
- W94.12 — Exposure to other prolonged low air pressure
- W94.12A — Exposure to other prolonged low air pressure, initial encounter
- W94.12D — Exposure to other prolonged low air pressure, subsequent encounter
- W94.12S — Exposure to other prolonged low air pressure, sequela
- W94.12XA — Exposure to other prolonged low air pressure, initial encounter
- W94.12XD — Exposure to other prolonged low air pressure, subsequent encounter
- W94.12XS — Exposure to other prolonged low air pressure, sequela
- W94.2 — Exposure to rapid changes in air pressure during ascent
- W94.21 — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving
- W94.21A — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, initial encounter
- W94.21D — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, subsequent encounter
- W94.21S — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, sequela
- W94.21XA — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, initial encounter
- W94.21XD — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, subsequent encounter
- W94.21XS — Exposure to reduction in atmospheric pressure while surfacing from deep-water diving, sequela
- W94.22 — Exposure to reduction in atmospheric pressure while surfacing from underground
- W94.22A — Exposure to reduction in atmospheric pressure while surfacing from underground, initial encounter
- W94.22D — Exposure to reduction in atmospheric pressure while surfacing from underground, subsequent encounter
- W94.22S — Exposure to reduction in atmospheric pressure while surfacing from underground, sequela
- W94.22XA — Exposure to reduction in atmospheric pressure while surfacing from underground, initial encounter
- W94.22XD — Exposure to reduction in atmospheric pressure while surfacing from underground, subsequent encounter
- W94.22XS — Exposure to reduction in atmospheric pressure while surfacing from underground, sequela
- W94.23 — Exposure to sudden change in air pressure in aircraft during ascent
- W94.23A — Exposure to sudden change in air pressure in aircraft during ascent, initial encounter
- W94.23D — Exposure to sudden change in air pressure in aircraft during ascent, subsequent encounter
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: