06/01/2026
Your T-code claim will be invalid before it even reaches the payer if you don’t use the 7th character. ICD-10-CM T-codes cover a range of medical conditions, from drug poisoning to surgical complications. Learn the essential billing rules for Group T diagnosis codes in our detailed guide.
Blog: https://medibillmd.com/blog/t-codes-in-medical-billing/
T-codes in medical billing are ICD-10-CM diagnosis codes (T00 to T88) covering adverse effects, poisonings, injuries, and surgical complications.