G56.9
Header — not billableUnspecified mononeuropathy of upper limb
The ICD-10 code for unspecified mononeuropathy of upper limb is G56.9.
G56.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G56.0Carpal tunnel syndromenon-billable header
- G56.1Other lesions of median nervenon-billable header
- G56.2Lesion of ulnar nervenon-billable header
- G56.3Lesion of radial nervenon-billable header
- G56.4Causalgia of upper limbnon-billable header
- G56.8Other specified mononeuropathies of upper limbnon-billable header
- G56.9Unspecified mononeuropathy of upper limbnon-billable header