T84.21
⚠ Non-billable (Header)Breakdown (mechanical) of internal fixation device of other bones
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for T84.21
Child Codes (4)
T84.210Breakdown (mechanical) of internal fixation device of bones of hand and fingersT84.213Breakdown (mechanical) of internal fixation device of bones of foot and toesT84.216Breakdown (mechanical) of internal fixation device of vertebraeT84.218Breakdown (mechanical) of internal fixation device of other bones
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CodeT84.21
BillableNo — Header code
ParentT84.2
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes20 note(s)
Child codes4
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)