T66.XXXA
BillableRadiation sickness, unspecified, initial encounter
T66.XXXA is the ICD-10-CM code for Radiation sickness, unspecified, initial encounter. It is a billable, specific code valid for reimbursement.
S00-T88 Injury, poisoning and certain other consequences of external causes
No additional coding notes for this code.
Frequently asked questions
- What is ICD-10 code T66.XXXA?
- T66.XXXA is the ICD-10-CM code for "Radiation sickness, unspecified, initial encounter". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is T66.XXXA a billable code?
- Yes — T66.XXXA is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition