T50 — Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances
T50 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances. 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 T50
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Other codes that can never be billed with T50
These codes carry an Excludes1 note pointing at T50. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T50 alone.
Risk adjustment
T50 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 T50
13 child codes. Green means billable.
- T50.0Poisoning by, adverse effect of and underdosing of mineralocorticoids and their antagonists
- T50.1Poisoning by, adverse effect of and underdosing of loop [high-ceiling] diuretics
- T50.2Poisoning by, adverse effect of and underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics
- T50.3Poisoning by, adverse effect of and underdosing of electrolytic, caloric and water-balance agents
- T50.4Poisoning by, adverse effect of and underdosing of drugs affecting uric acid metabolism
- T50.5Poisoning by, adverse effect of and underdosing of appetite depressants
- T50.6Poisoning by, adverse effect of and underdosing of antidotes and chelating agents
- T50.7Poisoning by, adverse effect of and underdosing of analeptics and opioid receptor antagonists
- T50.8Poisoning by, adverse effect of and underdosing of diagnostic agents
- T50.APoisoning by, adverse effect of and underdosing of bacterial vaccines
- T50.BPoisoning by, adverse effect of and underdosing of viral vaccines
- T50.ZPoisoning by, adverse effect of and underdosing of other vaccines and biological substances
- T50.9Poisoning by, adverse effect of and underdosing of other and unspecified drugs, medicaments and biological substances
Questions about T50
- Is T50 a billable ICD-10-CM code?
- No. T50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T50 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).