Is T61 a billable ICD-10-CM code?

No. T61 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T61 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).

What cannot be coded together with T61?

T61 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

T61

T61 — Toxic effect of noxious substances eaten as seafood

Non-billable headerICD-10-CM

T61 is a non-billable header ICD-10-CM code for toxic effect of noxious substances eaten as seafood. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T61

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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-)

Other codes that can never be billed with T61

These codes carry an Excludes1 note pointing at T61. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T61 alone.

A05Other bacterial foodborne intoxications, not elsewhere classified

Risk adjustment

T61 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead T61

5 child codes. Green means billable.

Questions about T61

Is T61 a billable ICD-10-CM code?: No. T61 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T61 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).
What cannot be coded together with T61?: T61 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.