ICD-10-CM 2027 diagnosis code
T63.6Toxic effect of contact with other venomous marine animals
T63.6 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it and add the required 7th character.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T63.6
T63.6 is the ICD-10-CM diagnosis code for toxic effect of contact with other venomous marine animals. It belongs to category T63 (toxic effect of contact with venomous animals and plants), block T51-T65 (toxic effects of substances chiefly nonmedicinal as to source) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
Within T63, choose T63.6 (contact with other venomous marine animals) only when documentation doesn't support a more specific option: snake venom (T63.0), venom of other reptiles (T63.1), venom of scorpion (T63.2), venom of spider (T63.3), venom of other arthropods (T63.4), contact with venomous fish (T63.5), contact with venomous plant (T63.7), contact with other venomous animals (T63.8) and 1 more.
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
Don't report T63.6 together with the conditions in its Excludes1 note: sea-snake venom (T63.09).
The conditions in its Excludes2 note aren't part of T63.6, but may be coded alongside it if the patient has both: poisoning by ingestion of shellfish (T61.78-).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category T63
- T63.61Toxic effect of contact with Portuguese Man-o-war
- T63.62Toxic effect of contact with other jellyfish
- T63.63Toxic effect of contact with sea anemone
- T63.69Toxic effect of contact with other venomous marine animals
- T63.691Toxic effect of contact with other venomous marine animals, accidental (unintentional)
- T63.692Toxic effect of contact with other venomous marine animals, intentional self-harm
- T63.693Toxic effect of contact with other venomous marine animals, assault
- T63.694Toxic effect of contact with other venomous marine animals, undetermined
- Ainitial encounter
- Dsubsequent encounter
- Ssequela
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to T63.6.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T63.6
Is T63.6 billable?
- No. T63.6 is a header code. Report one of its more specific subcodes instead.