T87.9 ICD-10-CM Code: Unspecified complications of amputation stump
T87.9 maps to CMS-HCC V28 409 (RAF 0.598). Documentation must support MEAT. MEAT criteria · RAF calculator · HCC coding software
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Injury, poisoning and certain other consequences of external causes (S00-T88) / Complications of surgical and medical care, not elsewhere classified (T80-T88)
T87.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified complications of amputation stump
A complication related to an amputation stump that is present but not specifically identified or documented.
Buddy Insight
Unspecified complications of amputation stump indicates presence of amputation-related problems without specific classification, suggesting need for further diagnostic clarification.
CMS-HCC V28
MappedHCC 409
RAF 0.598
CMS-HCC V24
MappedHCC 189
RAF 0.519
ACA/HHS
MappedHCC 234
Varies by metal level
ESRD/PACE
MappedHCC 189
RAF 0.081
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for T87.9 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for T87.9 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for T87.9 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for T87.9 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for T87.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for T87.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for T87.9 in this effective period.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is T87.9 an HCC code?
Yes. T87.9 (Unspecified complications of amputation stump) maps to Amputation Status, Lower Limb/Amputation Complications under the CMS-HCC V28 risk adjustment model (and Amputation Status, Lower Limb/Amputation Complications under V24), with a community non-dual aged RAF of 0.598. It is billable for payment year 2026.
Coder answer: T87.9 is billable and maps to V28 HCC 409, Amputation Status, Lower Limb/Amputation Complications. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.
- Code
- T87.9
- Description
- Unspecified complications of amputation stump
- HCC (V28)
- HCC 409 — Amputation Status, Lower Limb/Amputation Complications
- RAF
- 0.598
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
Each model's RAF is its CMS base weight for that model's standard population, so weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
Work T87.9 in the Code Book — tabular path, V28 RAF, and MEAT checklist →
MEAT Criteria for T87.9
For T87.9 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed T87.9 during that encounter, not just copy-forwarded from a problem list.
Coder workflow notes
Get the V28 RAF + MEAT cheat sheet
One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.
Free PDF. No card. Unsubscribe anytime.
What This Code Means
T87.9 is the ICD-10-CM diagnosis code for unspecified complications of amputation stump. A complication related to an amputation stump that is present but not specifically identified or documented. T87.9 sits in the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88), within the section covering complications of surgical and medical care, not elsewhere classified (t80-t88).
Under the CMS-HCC V28 risk adjustment model, T87.9 maps to Amputation Status, Lower Limb/Amputation Complications (HCC 409) with a community, non-dual, aged base RAF weight of 0.598. Under the older V24 model, T87.9 mapped to the same category but with a base RAF weight of 0.519, V28 recalibrated weights across the entire model. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.
Avoid using this unspecified code when the specific complication can be identified and coded more precisely. Because T87.9 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for T87.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Avoid using this unspecified code when the specific complication can be identified and coded more precisely
- •Query the provider if the specific type of stump complication can be determined from clinical documentation
Clinical Significance
Unspecified complications of amputation stump indicates presence of amputation-related problems without specific classification, suggesting need for further diagnostic clarification. This diagnosis captures ongoing care complexity while awaiting more definitive diagnosis.
Documentation Requirements
- ✓Documentation of complication related to amputation stump
- ✓Clinical evidence of problem affecting amputation site
- ✓Assessment indicating need for medical intervention
- ✓Treatment or evaluation plans in progress
- ✓Impact on patient's functional status
- ✓Plans for further diagnostic workup if needed
- ✓Healthcare resource utilization related to complication
- ✓Provider assessment indicating amputation-related issue
Commonly Confused Codes
- •T87.89: Other complications of amputation stump (more specific)
- •T87.40-T87.54: Specific amputation complications when type is known
- •Z89.-: Acquired absence of limb (status codes, not complications)
- •T81.9: Unspecified complication of procedure (too general)
- •G89.18: Other acute postprocedural pain (when pain is the issue)