Is T48.90 a billable ICD-10-CM code?

No. T48.90 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T48.90 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).

T48.90

T48.90 — Poisoning by, adverse effect of and underdosing of unspecified agents primarily acting on the respiratory system

Non-billable headerICD-10-CM

T48.90 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of unspecified agents primarily acting on the respiratory system. 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 T48

A: initial encounter
D: subsequent encounter
S: sequela

Risk adjustment

T48.90 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 T48.90

6 child codes. Green means billable.

Related codes at this level

Codes that share T48.9. If T48.90 is not quite right, the correct code is usually one of these.

T48.99Poisoning by, adverse effect of and underdosing of other agents primarily acting on the respiratory system

Questions about T48.90

Is T48.90 a billable ICD-10-CM code?: No. T48.90 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T48.90 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).