G56.91 Unspecified mononeuropathy of right upper limb

Billable ICD-10-CM code, FY2026.

Applies from G56 Mononeuropathies of upper limb

Excludes1 (never code together)

• current traumatic nerve disorder - see nerve injury by body region

MS-DRG index

Defines the logic of DRG(s) 073-074 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 354.9 Mononeuritis of upper limb, unspecified (approximate)

Code annotations containing back-references to G56.91

Back-references to G56

• Type 1 Excludes: M79.2 Neuralgia and neuritis, unspecified ("mononeuropathies (G56-G58)")

Nearby codes

• G56.81 Other specified mononeuropathies of right upper limb
• G56.82 Other specified mononeuropathies of left upper limb
• G56.83 Other specified mononeuropathies of bilateral upper limbs
• G56.9 Unspecified mononeuropathy of upper limb
• G56.90 Unspecified mononeuropathy of unspecified upper limb
• G56.91 Unspecified mononeuropathy of right upper limb (this code)
• G56.92 Unspecified mononeuropathy of left upper limb
• G56.93 Unspecified mononeuropathy of bilateral upper limbs