T84.629A Infection and inflammatory reaction due to internal fixation device of unspecified bone of leg, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T84.629 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 T84.6 Infection and inflammatory reaction due to internal fixation device

Use additional code

• code to identify infection

Risk adjustment (HCC)

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

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to T84.629A

Back-references to T84.6

• Type 2 Excludes: T80.2 Infections following infusion, transfusion and therapeutic injection ("infections specified as due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7)")
• Type 2 Excludes: T81.4 Infection following a procedure ("infection due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7)")
• Type 1 Excludes: Z47.2 Encounter for removal of internal fixation device ("infection or inflammatory reaction to internal fixation device (T84.6-)")

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 T84.629A

• Complication (s) (from) (of) › fixation device, internal (orthopedic) › infection and inflammation › leg

Nearby codes

• T84.625 Infection and inflammatory reaction due to internal fixation device of left fibula
• T84.625A Infection and inflammatory reaction due to internal fixation device of left fibula, initial encounter
• T84.625D Infection and inflammatory reaction due to internal fixation device of left fibula, subsequent encounter
• T84.625S Infection and inflammatory reaction due to internal fixation device of left fibula, sequela
• T84.629 Infection and inflammatory reaction due to internal fixation device of unspecified bone of leg
• T84.629A Infection and inflammatory reaction due to internal fixation device of unspecified bone of leg, initial encounter (this code)
• T84.629D Infection and inflammatory reaction due to internal fixation device of unspecified bone of leg, subsequent encounter
• T84.629S Infection and inflammatory reaction due to internal fixation device of unspecified bone of leg, sequela
• T84.63 Infection and inflammatory reaction due to internal fixation device of spine
• T84.63XA Infection and inflammatory reaction due to internal fixation device of spine, initial encounter
• T84.63XD Infection and inflammatory reaction due to internal fixation device of spine, subsequent encounter