T87.40 Infection of amputation stump, unspecified extremity

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Risk adjustment (HCC)

• CMS-HCC V28: HCC 409 — Amputation Status, Lower Limb/Amputation Complications
• CMS-HCC V22: HCC 189 — Amputation Status, Lower Limb/Amputation Complications
• ESRD V24: HCC 189

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 997.62 Infection (chronic) of amputation stump (approximate)

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 T87.40

Back-references to T87

• 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)")

Diagnosis Index entries for T87.40

• Complication (s) (from) (of) › amputation stump (surgical) (late) NEC › infection or inflammation

Nearby codes

• T87.31 Neuroma of amputation stump, right upper extremity
• T87.32 Neuroma of amputation stump, left upper extremity
• T87.33 Neuroma of amputation stump, right lower extremity
• T87.34 Neuroma of amputation stump, left lower extremity
• T87.4 Infection of amputation stump
• T87.40 Infection of amputation stump, unspecified extremity (this code)
• T87.41 Infection of amputation stump, right upper extremity
• T87.42 Infection of amputation stump, left upper extremity
• T87.43 Infection of amputation stump, right lower extremity
• T87.44 Infection of amputation stump, left lower extremity
• T87.5 Necrosis of amputation stump