W56.21XA is the authoritative medical code for Bitten by orca, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for bitten by orca, initial encounter (ICD-10-CM W56.21XA), 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
Bitten by orca, initial encounter is a billable ICD-10-CM diagnosis code W56.21A. Excludes1 (not coded here): contact with venomous marine animal T63.-; Toxic effect of contact with venomous animals and plants T63.-. 7th character: The appropriate 7th character is to be added to each code from category W56.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for W56.21XA in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- contact with venomous marine animal T63.-
- Toxic effect of contact with venomous animals and plants T63.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Does W56.21XA require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category W56.
What can't be coded together with W56.21XA?
Per Excludes1 instructions, W56.21XA must not be reported with: contact with venomous marine animal (T63.-); Toxic effect of contact with venomous animals and plants (T63.-).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as W56.21XA, with their registry titles.
- W56 — Contact with nonvenomous marine animal
- W56.0 — Contact with dolphin
- W56.01 — Bitten by dolphin
- W56.01XA — Bitten by dolphin, initial encounter
- W56.01XD — Bitten by dolphin, subsequent encounter
- W56.01XS — Bitten by dolphin, sequela
- W56.02 — Struck by dolphin
- W56.02XA — Struck by dolphin, initial encounter
- W56.02XD — Struck by dolphin, subsequent encounter
- W56.02XS — Struck by dolphin, sequela
- W56.09 — Other contact with dolphin
- W56.09XA — Other contact with dolphin, initial encounter
- W56.09XD — Other contact with dolphin, subsequent encounter
- W56.09XS — Other contact with dolphin, sequela
- W56.1 — Contact with sea lion
- W56.11 — Bitten by sea lion
- W56.11XA — Bitten by sea lion, initial encounter
- W56.11XD — Bitten by sea lion, subsequent encounter
- W56.11XS — Bitten by sea lion, sequela
- W56.12 — Struck by sea lion
- W56.12XA — Struck by sea lion, initial encounter
- W56.12XD — Struck by sea lion, subsequent encounter
- W56.12XS — Struck by sea lion, sequela
- W56.19 — Other contact with sea lion
- W56.19XA — Other contact with sea lion, initial encounter
- W56.19XD — Other contact with sea lion, subsequent encounter
- W56.19XS — Other contact with sea lion, sequela
- W56.2 — Contact with orca
- W56.21 — Bitten by orca
- W56.21XD — Bitten by orca, subsequent encounter
- W56.21XS — Bitten by orca, sequela
- W56.22 — Struck by orca
- W56.22XA — Struck by orca, initial encounter
- W56.22XD — Struck by orca, subsequent encounter
- W56.22XS — Struck by orca, sequela
- W56.29 — Other contact with orca
- W56.29XA — Other contact with orca, initial encounter
- W56.29XD — Other contact with orca, subsequent encounter
- W56.29XS — Other contact with orca, sequela
- W56.3 — Contact with other marine mammals
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: