T63.91XA — Toxic effect of contact with unspecified venomous animal, accidental (unintentional), initial encounter
Is T63.91XA billable?
Yes, but T63.91XA is an unspecified code. T63.91XA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T63.91XA is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T63.91XA — the more specific alternatives are listed below.
More specific alternatives
- T63.001AToxic effect of unspecified snake venom, accidental (unintentional), initial encounter
- T63.111AToxic effect of venom of gila monster, accidental (unintentional), initial encounter
- T63.2X1AToxic effect of venom of scorpion, accidental (unintentional), initial encounter
- T63.301AToxic effect of unspecified spider venom, accidental (unintentional), initial encounter
- T63.411AToxic effect of venom of centipedes and venomous millipedes, accidental (unintentional), initial encounter
- T63.511AToxic effect of contact with stingray, accidental (unintentional), initial encounter
- T63.611AToxic effect of contact with Portuguese Man-o-war, accidental (unintentional), initial encounter
- T63.711AToxic effect of contact with venomous marine plant, accidental (unintentional), initial encounter
- T63.811AToxic effect of contact with venomous frog, accidental (unintentional), initial encounter
T63.91XA at a glance
| Code | T63.91XA |
|---|---|
| Description | Toxic effect of contact with unspecified venomous animal, accidental (unintentional), initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in T63.91XA?
In T63.91XA, the 7th character A means initial encounter. The 7th character is required for T63.91XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T63.91XA group to?
T63.91XA sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 917Poisoning and Toxic Effects of Drugs with MCCmedical
- 918Poisoning and Toxic Effects of Drugs without MCCmedical
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T63.91XA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- contact with and (suspected) exposure to toxic substances (Z77.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside T63.91XA to fully describe the condition. T63.91XA is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T51-T65
Report an additional code alongside T63.91XA to fully describe the condition. T63.91XA is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T63.91XA, but a patient may have both at the same time. When documentation supports it, T63.91XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from T63
The conditions below are not part of T63.91XA, but a patient may have both at the same time. When documentation supports it, T63.91XA and the excluded code may both be reported.
How long has T63.91XA existed?
T63.91XA has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.