G90.522: Complex regional pain syndrome I of left lower limb
G90.522, complex regional pain syndrome I of left lower limb, is listed as a covered diagnosis in 11 Medicare billing and coding articles that apply to 26 HCPCS Level II codes, including G0283 (Electrical stimulation (unattended), to one or more areas…), G0410 (Group psychotherapy other than of a multiple-family group…), G0017 (Psychotherapy for crisis furnished in an applicable site…). 4 of these codes have a 2026 DMEPOS fee schedule amount; E0783 pays $9,917.33 to $11,667.45 (NU) depending on the state. The articles come from 5 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with G90.522 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| G0283 | Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care | Carrier judgment | — | 4 |
| G0410 | Group psychotherapy other than of a multiple-family group, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutes | Carrier judgment | — | 1 |
| G0017 | Psychotherapy for crisis furnished in an applicable site of service (any place of service at which the non-facility rate for psychotherapy for crisis services applies, other than the office setting); first 60 minutes | Carrier judgment | — | 1 |
| G0018 | Psychotherapy for crisis furnished in an applicable site of service (any place of service at which the non-facility rate for psychotherapy for crisis services applies, other than the office setting); each additional 30 minutes (list separately in addition to code for primary service) | Carrier judgment | — | 1 |
| G0411 | Interactive group psychotherapy, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutes | Carrier judgment | — | 1 |
| E0783 | Infusion pump system, implantable, programmable (includes all components, e.g., pump, catheter, connectors, etc.) | Special coverage instructions apply | $9,917.33–$11,667.45 (NU) | 1 |
| E0786 | Implantable programmable infusion pump, replacement (excludes implantable intraspinal catheter) | Special coverage instructions apply | $10,969.75–$11,380.88 (NU) | 1 |
| E0782 | Infusion pump, implantable, non-programmable (includes all components, e.g., pump, catheter, connectors, etc.) | Special coverage instructions apply | $5,200.92–$6,118.73 (NU) | 1 |
| E0785 | Implantable intraspinal (epidural/intrathecal) catheter used with implantable infusion pump, replacement | Special coverage instructions apply | $572.38–$673.39 (KF) | 1 |
| J7999 | Compounded drug, not otherwise classified | Special coverage instructions apply | — | 1 |
| J2278 | Injection, ziconotide, 1 microgram | Special coverage instructions apply | — | 1 |
| J2274 | Injection, morphine sulfate, preservative-free for epidural or intrathecal use, 10 mg | Special coverage instructions apply | — | 1 |
| A4220 | Refill kit for implantable infusion pump | Special coverage instructions apply | — | 1 |
| J9200 | Injection, floxuridine, 500 mg | Special coverage instructions apply | — | 1 |
| G0281 | Electrical stimulation, (unattended), to one or more areas, for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers, and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care, as part of a therapy plan of care | Carrier judgment | — | 2 |
| G0329 | Electromagnetic therapy, to one or more areas for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care as part of a therapy plan of care | Carrier judgment | — | 2 |
| G0152 | Services performed by a qualified occupational therapist in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0158 | Services performed by a qualified occupational therapist assistant in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0160 | Services performed by a qualified occupational therapist, in the home health setting, in the establishment or delivery of a safe and effective occupational therapy maintenance program, each 15 minutes | Carrier judgment | — | 1 |
| G2169 | Services performed by an occupational therapist assistant in the home health setting in the delivery of a safe and effective occupational therapy maintenance program, each 15 minutes | Carrier judgment | — | 1 |
| G2010 | Remote evaluation of recorded video and/or images submitted by an established patient (e.g., store and forward), including interpretation with follow-up with the patient within 24 business hours, not originating from a related e/m service provided within the previous 7 days nor leading to an e/m service or procedure within the next 24 hours or soonest available appointment | Carrier judgment | — | 1 |
| G2250 | Remote assessment of recorded video and/or images submitted by an established patient (e.g., store and forward), including interpretation with follow-up with the patient within 24 business hours, not originating from a related service provided within the previous 7 days nor leading to a service or procedure within the next 24 hours or soonest available appointment | Carrier judgment | — | 1 |
| G2251 | Brief communication technology-based service, e.g. virtual check-in, by a qualified health care professional who cannot report evaluation and management services, provided to an established patient, not originating from a related service provided within the previous 7 days nor leading to a service or procedure within the next 24 hours or soonest available appointment; 5-10 minutes of clinical discussion | Carrier judgment | — | 1 |
| G0151 | Services performed by a qualified physical therapist in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0255 | Current perception threshold/sensory nerve conduction test, (snct) per limb, any nerve | Non-covered by Medicare | Not covered | 5 |
1 more codes are listed. See every code with payment by region in Caduvo.
Medicare policy articles listing G90.522
- A56034: Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L35456
- A57480: Billing and Coding: Psychiatry and Psychology Services (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 4 Level II codes). LCD with the same title: L33632, L34616
- A57307: Billing and Coding: Nerve Conduction Studies and Electromyography (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
- A57478: Billing and Coding: Nerve Conduction Studies and Electromyography (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
- A54969: Billing and Coding: Nerve Conduction Studies and Electromyography (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
- A57668: Billing and Coding: Nerve Conduction Studies and Electromyography (Wellpoint Federal (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
- A56619: Billing and Coding: Nerve Conduction Studies and Electromyography (Palmetto GBA (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
- A56695: Billing and Coding: Implantable Infusion Pump (Palmetto GBA (MAC - Part B); 9 Level II codes). LCD with the same title: L33461
- A53057: Billing and Coding: Home Health Occupational Therapy (Palmetto GBA (HHH MAC); 5 Level II codes). LCD with the same title: L34560
- A53064: Billing and Coding: Outpatient Occupational Therapy (Palmetto GBA (MAC - Part A); 3 Level II codes). LCD with the same title: L34427
- A57311: Billing and Coding: Physical Therapy - Home Health (CGS Administrators, LLC (HHH MAC); 7 Level II codes). LCD with the same title: L33942
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other G90 diagnoses (Disorders of autonomic nervous system)
- G90.521 — Complex regional pain syndrome I of right lower limb
- G90.523 — Complex regional pain syndrome I of lower limb, bilateral
- G90.511 — Complex regional pain syndrome I of right upper limb
- G90.512 — Complex regional pain syndrome I of left upper limb
- G90.513 — Complex regional pain syndrome I of upper limb, bilateral
- G90.59 — Complex regional pain syndrome I of other specified site
- G90.01 — Carotid sinus syncope
- G90.09 — Other idiopathic peripheral autonomic neuropathy
- G90.2 — Horner's syndrome
- G90.4 — Autonomic dysreflexia
- G90.89 — Other disorders of autonomic nervous system
- G90.9 — Disorder of the autonomic nervous system, unspecified
Frequently asked questions
Does Medicare cover G90.522 (Complex regional pain syndrome I of left lower limb)?
Medicare covers items and services, not diagnoses. 11 Medicare billing and coding articles list G90.522 as a covered diagnosis for 26 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 G90.522?
The Level II codes from the policies most specific to this diagnosis are G0283 (Electrical stimulation (unattended), to one or more areas…, 4 articles); G0410 (Group psychotherapy other than of a multiple-family group…, 1 article); G0017 (Psychotherapy for crisis furnished in an applicable site…, 1 article); G0018 (Psychotherapy for crisis furnished in an applicable site…, 1 article); G0411 (Interactive group psychotherapy, in a partial…, 1 article). Code choice depends on the item supplied; check each code's descriptor.
What does Medicare pay for equipment billed with G90.522?
Under the 2026 DMEPOS fee schedule (non-rural state fees): E0783 $9,917.33 to $11,667.45 (NU); E0786 $10,969.75 to $11,380.88 (NU); E0782 $5,200.92 to $6,118.73 (NU); E0785 $572.38 to $673.39 (KF). Medicare pays 80% of the allowed amount after the Part B deductible.
Which Medicare policy articles list G90.522?
A56034 (Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy); A57480 (Billing and Coding: Psychiatry and Psychology Services); A57307 (Billing and Coding: Nerve Conduction Studies and Electromyography), and 8 more articles.
What is ICD-10-CM code G90.522?
G90.522 is the ICD-10-CM code for complex regional pain syndrome I of left lower limb, in category G90 (Disorders of autonomic nervous system), chapter 6: Diseases of the nervous system.
Next steps
- Run a reimbursement report for a device billed under G0283
- Watch G0283 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for G0283
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 6: Diseases of the nervous system · All diagnoses · HCPCS lookup