G54.6

🧬 ICD-10 CM G54.6 — Phantom Limb Syndrome With Pain

Billable Code Confirmed

ICD‑10 CM G54.6 is a valid, billable 4‑character diagnosis code for FY2026. ^{ICD10Data.com}
No additional characters are required.

Non-Billable Parent Codes — Never Submit These

• ❌ G54 — 3‑character header — lacks specificity regarding the type of nerve root/plexus disorder
• ❌ G54.6X — does not exist; do not append characters

Clinical Context

ICD‑10 CM [G54.6]] captures painful phantom limb sensations following partial or complete limb loss. This code is used only when pain is documented; otherwise, use G54.7 for non-painful phantom limb syndrome.

Code Classification

ICD‑10‑CM Diagnosis Code — wRVU, assistant payable, and global period do not apply.

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🔍 Code Description

ICD‑10‑CM G54.6 classifies phantom limb syndrome with pain, a neuropathic pain condition occurring after amputation. ^{ICD10Data.com}
It reflects persistent or intermittent painful sensations perceived in the missing limb.

Pathophysiology involves maladaptive cortical reorganization, peripheral nerve injury, and central sensitization — all contributing to chronic neuropathic pain.

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🌳 Code Tree / Hierarchy

G54 Nerve root and plexus disorders ❌ Non-billable 
│ ├── G54.5 Neuralgic amyotrophy ✅ Billable 
├── G54.6 Phantom limb syndrome with pain ◀ THIS CODE ✅ Billable 
│ └── G54.7 Phantom limb syndrome without pain ✅ Billable

Pain-Specific Coding

Use G54.6 only when pain is explicitly documented. If the provider documents phantom sensations without pain, code G54.7 instead.

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✅ Includes

The following map to G54.6:

• Painful phantom limb
• Painful phantom sensations
• Neuropathic pain in amputated limb region
• Persistent phantom limb pain after amputation

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❌ Excludes

Excludes 1 — Cannot Be Coded Simultaneously with G54.6

Code	Description	Note
T87.89	Other complications of amputation stump	Use when stump pathology (e.g., infection, necrosis) is the cause of pain
G89	Pain, not elsewhere classified	Do not code general pain codes with phantom limb pain

Excludes 1 Violation Risk

Do not pair G54.6 with general pain codes like G89. Phantom limb pain is already fully captured by G54.6.

Excludes 2 — May Be Coded in Addition

Code	Description	Note
F45.42	Psychological factors associated with pain	Code when documented as contributing
F45.41	Pain disorders exclusively related to psychological factors	Use only when provider documents psychogenic pain component

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📋 Clinical Overview

Phenotype Distinction — Painful vs. Non-Painful Phantom Limb Syndromes

Feature	G54.6 — Painful	G54.7 — Non-Painful	G89.2 — Chronic Pain
Pain present	Yes	No	Yes
Sensory phenomena	Burning, stabbing, electric	Tingling, pressure	Variable
Etiology	Neuropathic + cortical reorganization	Sensory misperception	Chronic pain syndrome

Documentation Tip — Confirm Pain

Providers must explicitly document pain to support G54.6. If documentation only states “phantom sensations,” query for clarification.

Manifestations & Symptom Burden

• Neuropathic pain: burning, stabbing, electric sensations
• Residual limb discomfort: may coexist but is separately coded
• Functional impairment: difficulty with prosthetic use
• Sleep disturbance: due to pain flares

Coding Manifestations

Always code associated conditions when documented, such as:

• G47.00 — Insomnia
• F32.A — Depression
• M79.2 — Neuralgia (if unrelated to phantom limb)

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💰 HCC Risk Adjustment (CMS-HCC v28)

Field	Detail
CMS-HCC Model Version	v28
HCC Assignment	❌ Not HCC-Mapped
HCC Category	N/A
RAF Coefficient	N/A

Capture Annually

Although not HCC‑mapped, documenting phantom limb pain supports chronic pain management planning and prosthetic care.

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🏥 MS-DRG Assignment

MDC 01 — Diseases & Disorders of the Nervous System

DRG	Title	Est. Relative Weight*
073	Cranial & peripheral nerve disorders with MCC	~1.3-1.6
074	Cranial & peripheral nerve disorders without MCC	~0.8-1.0

Approximate — verify against FY2026 IPPS tables.

Sequencing

G54.6 may be principal when phantom limb pain is the reason for admission. Secondary MCC/CCs determine DRG 073 vs. 074.

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🔗 Related ICD-10-CM Codes

Pain vs. Non-Pain Variants

Code	Description
G54.6	Phantom limb syndrome with pain
G54.7	Phantom limb syndrome without pain

Etiology / Associated Conditions

Code	Description
T87.89	Complications of amputation stump
G89.21	Chronic pain due to trauma
M79.2	Neuralgia/neuritis NOS

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🛠️ Commonly Associated CPT Codes (Pain Management)

Outpatient & Profee Context

These procedures are often used to treat phantom limb pain; apply modifier ‑26 for professional component when appropriate.

CPT Code	Description	Profee Notes
64450	Peripheral nerve block	Modifier -26 if imaging used
64415	Brachial plexus block	Bundling edits may apply
62323	Epidural injection	Requires imaging documentation
97110	Therapeutic exercises	Often billed with prosthetic training

NCCI Bundling Considerations

• E/M + nerve block on same day → Modifier ‑25 required
• Multiple nerve blocks → Modifier ‑59 or ‑XS when distinct anatomical sites

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🔬 ICD‑10‑PCS Crosswalk (Inpatient Procedures)

PCS Section	Body System	Root Operation	Clinical Application
3E0	Administration	Introduction	3E0U3BZ — Peripheral nerve anesthetic for pain control
3E0	Administration	Introduction	3E0T3BZ — Spinal canal anesthetic for pain control

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💊 Coding Scenarios and Examples

Scenario 1 — Outpatient: Persistent Phantom Limb Pain

Clinical Vignette: A 58‑year‑old man with a left below‑knee amputation reports burning and stabbing sensations in the absent limb. Pain interferes with prosthetic use.

Principal Diagnosis:

• G54.6 — Phantom limb syndrome with pain

Secondary Codes:

• G47.00 — Insomnia (sleep disturbance due to pain)
• F32.A — Depression (documented mood symptoms)

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Scenario 2 — Inpatient: Severe Pain Flare

Clinical Vignette: A 72‑year‑old woman is admitted for uncontrolled phantom limb pain after recent prosthetic adjustments.

Principal Diagnosis:

• G54.6 — Reason for admission

Secondary Diagnoses:

• I10 — Hypertension (comorbidity)
• E11.9 — Diabetes mellitus (comorbidity)

MS‑DRG:
Groups to DRG 074 unless MCC present.

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Scenario 3 — CDI Query: “Phantom Sensations”

Clinical Vignette: Provider documents “phantom sensations in missing limb,” but no mention of pain.

Action / Outcome:
Query provider: “Can you clarify whether the phantom sensations are painful?”

Query Response:
Provider adds: “Patient reports burning pain in missing limb.”

Corrected Coding:

• G54.6 — Phantom limb syndrome with pain

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⚠️ Coding Pitfalls and Tips

	Pitfall or Tip
❌	Using general pain codes. Do not code G89 with G54.6.
❌	Coding stump complications incorrectly. Use T87.89 when stump pathology is the cause of pain.
✅	Confirm pain documentation. Query when only “phantom sensations” are noted.
✅	Capture comorbidities. These influence DRG assignment.
✅	Document functional impact. Supports medical necessity for therapy and prosthetic services.

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📚 Sources

1. CMS/NCHS. ICD‑10‑CM Official Guidelines for Coding and Reporting, FY2026.
2. ICD10Data — G54.6 Phantom limb syndrome with pain. ^{ICD10Data.com}
3. AAPC Codify — G54.6 clinical classification and excludes notes. ^AAPC
4. ICD‑10 Coded — Billable status, DRG grouping. ^{ICD-10 Coded}
5. CMS. IPPS Final Rule FY2026 — MS‑DRG Definitions Manual v43.