T61.0 — Ciguatera fish poisoning
Is T61.0 billable?
No — T61.0 is a non-billable header code. T61.0 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 12 billable codes beneath T61.0.
Billable codes under this header
- T61.01XACiguatera fish poisoning, accidental (unintentional), initial encounter
- T61.01XDCiguatera fish poisoning, accidental (unintentional), subsequent encounter
- T61.01XSCiguatera fish poisoning, accidental (unintentional), sequela
- T61.02XACiguatera fish poisoning, intentional self-harm, initial encounter
- T61.02XDCiguatera fish poisoning, intentional self-harm, subsequent encounter
- T61.02XSCiguatera fish poisoning, intentional self-harm, sequela
- T61.03XACiguatera fish poisoning, assault, initial encounter
- T61.03XDCiguatera fish poisoning, assault, subsequent encounter
- T61.03XSCiguatera fish poisoning, assault, sequela
- T61.04XACiguatera fish poisoning, undetermined, initial encounter
- T61.04XDCiguatera fish poisoning, undetermined, subsequent encounter
- T61.04XSCiguatera fish poisoning, undetermined, sequela
T61.0 at a glance
| Code | T61.0 |
|---|---|
| Description | Ciguatera fish poisoning |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is T61.0 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to T61.0. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Poisoning › ciguatera fish (acute)
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T61.0 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.-)
Excludes1 — never code together — inherited from T61
The conditions below can never be reported together with T61.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- allergic reaction to food, such as:
- anaphylactic reaction or shock due to adverse food reaction (T78.0-)
- bacterial foodborne intoxications (A05.-)
- dermatitis (L23.6, L25.4, L27.2)
- food protein-induced enterocolitis syndrome (K52.21)
- food protein-induced enteropathy (K52.22)
- gastroenteritis (noninfective) (K52.29)
- toxic effect of aflatoxin and other mycotoxins (T64)
- toxic effect of cyanides (T65.0-)
- toxic effect of harmful algae bloom (T65.82-)
- toxic effect of hydrogen cyanide (T57.3-)
- toxic effect of mercury (T56.1-)
- toxic effect of red tide (T65.82-)
Use additional code — inherited from Chapter 19
Report an additional code alongside T61.0 to fully describe the condition. T61.0 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 T61.0 to fully describe the condition. T61.0 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T61.0, but a patient may have both at the same time. When documentation supports it, T61.0 and the excluded code may both be reported.
What codes fall under T61.0? (4)
How long has T61.0 existed?
T61.0 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.