S64.01XA: Injury of ulnar nerve at wrist and hand level of right arm, initial encounter

S64.01XA, injury of ulnar nerve at wrist and hand level of right arm, initial encounter, is listed as a covered diagnosis in 7 Medicare billing and coding articles that apply to 4 HCPCS Level II codes, including G0283 (Electrical stimulation (unattended), to one or more areas…), G0453 (Continuous intraoperative neurophysiology monitoring, from…), G0255 (Current perception threshold/sensory nerve conduction…). The articles come from 6 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 S64.01XA as a covered diagnosis

CodeDescriptionMedicare coverageDMEPOS fee 2026 (state range)Articles listing it
G0283Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of careCarrier judgment—1
G0453Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure)Carrier judgment—1
G0255Current perception threshold/sensory nerve conduction test, (snct) per limb, any nerveNon-covered by MedicareNot covered5
G0282Electrical stimulation, (unattended), to one or more areas, for wound care other than described in g0281Non-covered by MedicareNot covered1

Medicare policy articles listing S64.01XA

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 S64 diagnoses (Injury of nerves at wrist and hand level)

Frequently asked questions

Does Medicare cover S64.01XA (Injury of ulnar nerve at wrist and hand level of right…)?

Medicare covers items and services, not diagnoses. 7 Medicare billing and coding articles list S64.01XA as a covered diagnosis for 4 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 S64.01XA?

The Level II codes from the policies most specific to this diagnosis are G0283 (Electrical stimulation (unattended), to one or more areas…, 1 article); G0453 (Continuous intraoperative neurophysiology monitoring, from…, 1 article); G0255 (Current perception threshold/sensory nerve conduction…, 5 articles); G0282 (Electrical stimulation, (unattended), to one or more…, 1 article). Code choice depends on the item supplied; check each code's descriptor.

Which Medicare policy articles list S64.01XA?

A56034 (Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy); A56722 (Billing and Coding: Intraoperative Neurophysiological Testing); A57307 (Billing and Coding: Nerve Conduction Studies and Electromyography), and 4 more articles.

What is ICD-10-CM code S64.01XA?

S64.01XA is the ICD-10-CM code for injury of ulnar nerve at wrist and hand level of right arm, initial encounter, in category S64 (Injury of nerves at wrist and hand level), chapter 19: Injury, poisoning and other consequences of external causes.

Next steps

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 19: Injury, poisoning and other consequences of external causes · All diagnoses · HCPCS lookup