T84.318A Breakdown (mechanical) of other bone devices, implants and grafts, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T84.318 with 7th character A (initial encounter).

Applies from T84 Complications of internal orthopedic prosthetic devices, implants and grafts

Excludes2 (not included here)

• failure and rejection of transplanted organs and tissues (T86.-)
• fracture of bone following insertion of orthopedic implant, joint prosthesis or bone plate (M96.6)

7th character note

• The appropriate 7th character is to be added to each code from category T84

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T84.3 Mechanical complication of other bone devices, implants and grafts

Excludes2 (not included here)

• other complications of bone graft (T86.83-)

Risk adjustment (HCC)

• CMS-HCC V22: HCC 176 — Complications of Specified Implanted Device or Graft
• ESRD V24: HCC 176

Code annotations containing back-references to T84.318A

Back-references to T84.3

• Type 2 Excludes: T81.59 Other complications of foreign body accidentally left in body following procedure ("obstruction or perforation due to prosthetic devices and implants intentionally left in body (T82.0-T82.5, T83.0-T83.4, T83.7, T84.0-T84.4, T85.0-T85.6)")
• Type 2 Excludes: T86.83 Complications of bone graft ("mechanical complications of bone graft (T84.3-)")

Back-references to T84

• Type 2 Excludes: M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified ("complications of internal orthopedic prosthetic devices, implants and grafts (T84.-)")
• Type 2 Excludes: M96.6 Fracture of bone following insertion of orthopedic implant, joint prosthesis, or bone plate ("complication of internal orthopedic devices, implants or grafts (T84.-)")
• Type 2 Excludes: T78 Adverse effects, not elsewhere classified ("complications of surgical and medical care NEC (T80-T88)")
• Type 2 Excludes: T79 Certain early complications of trauma, not elsewhere classified ("complications occurring during or following medical procedures (T80-T88)")
• Type 2 Excludes: T79 Certain early complications of trauma, not elsewhere classified ("complications of surgical and medical care NEC (T80-T88)")
• Type 2 Excludes: T81 Complications of procedures, not elsewhere classified ("complication of prosthetic devices, implants and grafts (T82-T85)")
• Type 2 Excludes: T88 Other complications of surgical and medical care, not elsewhere classified ("complications of devices, implants and grafts (T82-T85)")
• Type 2 Excludes: Z96 Presence of other functional implants ("complications of internal prosthetic devices, implants and grafts (T82-T85)")
• Type 1 Excludes: Z97 Presence of other devices ("complications of internal prosthetic devices, implants and grafts (T82-T85)")

Diagnosis Index entries for T84.318A

• Complication (s) (from) (of) › bone › device NEC › mechanical › breakdown
• Complication (s) (from) (of) › graft (bypass) (patch) › bone › mechanical
• Complication (s) (from) (of) › graft (bypass) (patch) › bone › mechanical › breakdown

Nearby codes

• T84.310 Breakdown (mechanical) of electronic bone stimulator
• T84.310A Breakdown (mechanical) of electronic bone stimulator, initial encounter
• T84.310D Breakdown (mechanical) of electronic bone stimulator, subsequent encounter
• T84.310S Breakdown (mechanical) of electronic bone stimulator, sequela
• T84.318 Breakdown (mechanical) of other bone devices, implants and grafts
• T84.318A Breakdown (mechanical) of other bone devices, implants and grafts, initial encounter (this code)
• T84.318D Breakdown (mechanical) of other bone devices, implants and grafts, subsequent encounter
• T84.318S Breakdown (mechanical) of other bone devices, implants and grafts, sequela
• T84.32 Displacement of other bone devices, implants and grafts
• T84.320 Displacement of electronic bone stimulator
• T84.320A Displacement of electronic bone stimulator, initial encounter