ICD code T87.30 – Amputation stump neuroma, unspecified extremity

Key takeaways

T87.30 is the billable ICD-10-CM code for a neuroma of an amputation stump when the record doesn’t state the extremity or side.

When the chart supports it, use T87.31 (right upper), T87.32 (left upper), T87.33 (right lower) or T87.34 (left lower).

A Z89.x code is commonly added to show the level of amputation.

The provider has to document a neuroma, because stump pain or phantom pain alone points to different codes.

ICD-10 code T87.30 is the fallback code for stump neuromas

ICD-10 code T87.30 covers a neuroma of an amputation stump when the record doesn’t say which limb or side is affected. It has been billable since ICD-10-CM took effect on October 1, 2015, and it remains valid for FY2026. Its four siblings, T87.31 to T87.34, each carry both a side and a limb. Use the table below as a quick check before you assign it.

Verify current-year validity against the CDC/NCHS ICD-10-CM web tool, which publishes the official tabular list each October 1. The wider ICD-10-CM code library covers the Z89 and G54 codes that come up later in this guide.

What T87.30 means clinically: a painful nerve-end mass

A neuroma of the amputation stump is a painful, disorganized mass of nerve fibers. It forms when cut nerve fibers try to regrow at the surgical site but have nowhere to go. The result is a tangled, hypersensitive nodule near the tip of the residual limb.

T87.30 applies when the record doesn’t identify the side or the limb. It covers stump neuromas whether the original amputation was traumatic, surgical or disease-related. You’ll see it in inpatient, outpatient and rehabilitation settings that care for amputees.

What the exam note usually shows

• Localized stump pain: Sharp, burning or electric pain at the residual limb, often worse with prosthetic socket contact
• Tinel’s sign: Pain or tingling when the clinician taps directly over the neuroma
• Palpable mass: A tender nodule on examination, distinct from general stump swelling
• Hypersensitivity: An exaggerated response to light touch at the stump tip, especially along the scar line

Who tends to present with a stump neuroma

Veterans with service-connected limb loss and workers’ compensation patients with traumatic amputations are common T87.3x patients. Patients with diabetes-related lower-limb amputations are another large group. Their records often document the side clearly, which makes T87.33 or T87.34 (right or left lower extremity) the better fit.

T87.30 sits at the bottom of the T87.3 hierarchy

Knowing the hierarchy matters because claims submitted at the non-billable parent T87.3 are rejected. A claim needs one of the five billable codes beneath it. T87.30 is the right one only when the side or limb is missing.

So a neuroma on a right below-knee stump goes to T87.33, and the same finding on the left goes to T87.34.

T87.30 vs T87.31–T87.34: side and limb decide the code

Choosing between these five codes is the decision that matters most on a stump neuroma claim. Using “unspecified” when the chart names the side and limb is a coding error, and it invites a payer query or an audit finding. The diagram below walks through the choice in one step.

The operative report is the primary source for laterality. If it names the side and limb, use T87.31–T87.34, whatever the face sheet says. Defaulting to T87.30 because the face sheet is incomplete doesn’t meet the specificity rule in the ICD-10-CM Official Guidelines.

The guidelines also let you take laterality from another clinician’s note, such as a therapy or nursing entry. The neuroma diagnosis itself still has to come from the provider. When notes disagree on the side, query the attending provider.

Worked example: one patient, two possible codes

A patient with a transtibial amputation returns with a tender nodule at the stump. The physician writes “neuroma, residual limb, positive Tinel’s” but never says which leg. Last week’s physical therapy note records a left below-knee amputation.

Because laterality can come from the therapy note, the claim carries T87.34 with Z89.512. If no note anywhere named the side, T87.30 with Z89.519 would be correct instead.

What T87.30 includes, and what belongs elsewhere

T87.30 covers neuromas that form as a direct complication of amputation, however the limb was lost. It doesn’t cover every painful condition at the residual limb.

Included

• Symptomatic nerve-end neuroma at an amputation site where the side or limb isn’t specified
• Neuroma after a traumatic amputation
• Neuroma after a planned surgical amputation
• Residual limb neuroma after a disease-related amputation (for example, diabetic vascular disease)

Coded somewhere else

• Phantom limb syndrome: Coded to G54.6 (with pain) or G54.7 (without pain) in the nervous system chapter. Never code it as a stump neuroma.
• Stump pain with no neuroma documented: Doesn’t support any T87.3x code. Code what the provider documents, and query if the cause is unclear.
• Dehiscence of the stump: T87.81 covers dehiscence. T87.89 covers other complications such as hematoma.
• Unspecified stump complications: T87.9 is a billable code for complications the record doesn’t describe further.

Infection is the other common mix-up. It has its own codes, starting at T87.40 for an unspecified extremity, while T87.89 handles named complications that fit no other T87 code.

Stump neuroma vs phantom limb pain: the exam settles it

Stump neuroma and phantom limb pain are two common sources of pain after amputation, and notes often blur them. They need different ICD-10 codes, different documentation and, in some cases, different procedures.

Coders can’t select T87.30 on stump pain alone. The provider has to name the neuroma, not just “stump pain” or “residual limb pain.” When the note is ambiguous, a clinical documentation improvement (CDI) query is the right next step.

Z89 codes show the amputation level and side

A Z89.x code (acquired absence of limb) is recommended alongside T87.30 to show the level and side of the amputation. The T87.3x code describes the complication, and the Z89 code describes the limb that is missing.

Keep the two jobs separate. Z89 identifies the level and side of the amputation, while T87.3x identifies the extremity and side of the neuroma. These Z89 categories come up most often with stump neuromas:

Sequencing follows the reason for the visit. When the patient comes in to treat the neuroma (nerve block, excision or revision), T87.3x is the first-listed diagnosis and the Z89 code follows. When the neuroma is a secondary issue at a visit for something else, list it after the main reason, with the Z89 code alongside.

CPT codes that pair with T87.30 depend on the treatment

The procedure code follows the treatment the provider chose. Check descriptors against the current-year manual for the AMA’s CPT code set, because annual revisions change procedure definitions.

Nerve blocks are usually the first treatment, and the guide to CPT code 64450 covers how to bill them.

Targeted muscle reinnervation (TMR) reroutes cut nerves into nearby motor nerves, and it is an established option for painful stump neuromas. It has no dedicated CPT code, so coding varies by payer and some claims go out as 64999. Check the current CPT manual and your MAC’s local coverage determination before you submit.

Documentation that supports T87.30 on a claim

A T87.30 diagnosis in the chart doesn’t automatically support the code on a claim. Payers reviewing these claims look for the elements below, and a missing one can lead to denial or a query. A clean claim for T87.30 depends on having them in the chart before billing.

• Provider documentation of a neuroma: The provider must write “neuroma” at the amputation stump. “Stump pain” or “residual limb pain” alone doesn’t support T87.30.
• Side and limb: If any note records both, code T87.31–T87.34 instead. T87.30 is only defensible when one of them is absent from the whole record.
• Physical exam findings: A positive Tinel’s sign or a palpable nodule is the strongest clinical support.
• Imaging results: Not always required, but an ultrasound showing a hypoechoic nodule strengthens a surgical prior authorization.
• Failed conservative care: For excision or TMR, payers usually want records of failed nerve blocks, physical therapy or desensitization first.

Before you submit: a five-point check for T87.30 claims

Run through this list before the claim leaves the practice. Each point maps to a common reason these claims come back.

1. The provider’s note names a neuroma at the stump, not just pain.
2. You searched every note for the side and limb, and used T87.31–T87.34 if both appear.
3. A Z89 code for the amputation level and side sits alongside the T87.3x code.
4. The first-listed diagnosis matches the reason for the visit.
5. Surgical claims carry failed conservative care and any required prior authorization.

Why T87.30 claims come back, and how to fix them

T87.30 claims tend to come back for a small set of reasons. Denial management workflows that track them help you spot a pattern early. Watch for these five:

1. Unspecified code when the side and limb are documented. A payer review or audit can flag the claim as under-coded. Recode to T87.31–T87.34 from the note that names them.
2. No Z89 amputation status code. The claim gives an incomplete picture of the patient. Some payers return it for missing information (CARC CO-16).
3. Neuroma not documented. The record shows only “stump pain,” so the payer finds the diagnosis unsupported. Query the provider before resubmitting.
4. Medical necessity not shown for surgery (CO-50). The excision or TMR claim lacks records of failed conservative care. Attach them on appeal.
5. Wrong first-listed diagnosis. At a routine prosthetic check, an incidental neuroma shouldn’t lead. The diagnosis can then look inconsistent with the service billed (CO-11).

When a claim returns, read the adjustment reason code on the remittance advice before you edit the claim. A CO-16 needs the missing data added, while a CO-50 needs medical necessity evidence rather than a new code.

Payer rules differ for Medicare, workers’ comp and the VA

T87.30 shows up across three payer settings, each with its own documentation and authorization rules. One billing approach across all three is an easy way to collect preventable denials.

Medicare

Medicare coverage for T87.30 procedures depends on the local coverage determination (LCD) from your Medicare Administrative Contractor (MAC). MACs differ on whether nerve blocks for stump neuroma fall under a pain management LCD or a surgical one. Confirm the LCD number with your MAC before scheduling.

The CMS ICD-10 codes page publishes current code files and cross-reference tables. When coverage is uncertain, give the patient an Advance Beneficiary Notice (ABN) before the service.

Workers’ compensation

Workers’ compensation often pays for traumatic amputation cases, and it can scrutinize T87.30 claims closely. Causation documentation, tying the neuroma to the work injury, is essential. Some state programs also require an independent medical examination before surgery, so check each state’s rules separately.

Department of Veterans Affairs

Many patients with stump neuromas are veterans. For service-connected amputees, T87.30 documentation may feed into VA disability ratings as well as treatment authorization. Coding alone doesn’t establish service connection, which follows a separate administrative process. Confirm whether the visit is VA-funded or covered by a secondary payer such as Medicare or TRICARE.

T87.30 maps back to ICD-9-CM 997.61

ICD-9-CM 997.61 (Neuroma of amputation stump) carried no side or limb detail. In the General Equivalence Mappings (GEMs) it corresponds to the whole T87.30–T87.34 family, with T87.30 as the match when the record gives no extremity.

You’ll need this crosswalk for legacy system audits, historical claims reconciliation and remittance reviews involving claims from before October 2015. The AAPC Codify ICD-10-CM lookup and ICD List both keep crosswalk references for T87.30 and its siblings.

How Pabau keeps stump neuroma claims accurate from note to payer

On a stump neuroma claim, the details that matter sit in different notes. The surgeon documents the neuroma, therapy records the side, and someone retypes both onto the claim form.

Pabau, the practice management platform we build, pre-fills the claim from the patient record and has ICD-10-CM and CPT lookup built in. Its simpler claims management checks that required claim fields are complete before you send. US claims then go through Claim.MD, with eligibility checks, claim tracking and remittance posting.

Your coder still chooses the code. What changes is the handoff. The code, the Z89 status and the patient details reach the payer without retyping, so fewer claims come back for missing data.

Send complete T87.30 claims the first time

Pabau pre-fills claims from the patient record and checks required fields before submission. US claims go through Claim.MD, with eligibility checks and claim tracking included.

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Conclusion

T87.30 is a legitimate code, but it should be the last one you reach for. Search every note for the side and limb before you accept “unspecified,” and add the Z89 code so the payer sees the full picture.

If the record lacks the side or limb, T87.30 is correct and defensible. If a quick query would settle it, send the query. A short delay costs less than a recoded claim or an audit finding.

Book a demo to see how Pabau carries the diagnosis, the Z89 status and the patient details from the record onto the claim.

Continue your research

Need to understand how claims reach payers? Medical claims clearinghouse overview explains how clearinghouse checks catch claim errors before a claim reaches Medicare or a commercial payer.

Working through a high denial rate on amputee claims? Denial codes in medical billing maps common CARC adjustment reasons to their root causes in code selection and documentation.

Reading a remittance after a denial? Electronic remittance advice shows how to read the adjustment codes on a returned claim before you resubmit.

Want to verify coverage before scheduling a neuroma procedure? Insurance eligibility verification covers the checks that confirm coverage before the appointment.

Billing Medicare amputee patients? Medical billing compliance covers the rules, notices and audits that apply to Medicare claims.

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