Is G57.9 a billable ICD-10-CM code?

No. G57.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does G57.9 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).

G57.9

G57.9 — Unspecified mononeuropathy of lower limb

Non-billable headerICD-10-CMunspecified

G57.9 is a non-billable header ICD-10-CM code for unspecified mononeuropathy of lower limb. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

G57.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead G57.9

4 child codes. Green means billable.

G57.90Unspecified mononeuropathy of unspecified lower limb
G57.91Unspecified mononeuropathy of right lower limb
G57.92Unspecified mononeuropathy of left lower limb
G57.93Unspecified mononeuropathy of bilateral lower limbs

Related codes at this level

Codes that share G57. If G57.9 is not quite right, the correct code is usually one of these.

G57.0Lesion of sciatic nerve
G57.1Meralgia paresthetica
G57.2Lesion of femoral nerve
G57.3Lesion of lateral popliteal nerve
G57.4Lesion of medial popliteal nerve
G57.5Tarsal tunnel syndrome
G57.6Lesion of plantar nerve
G57.7Causalgia of lower limb
G57.8Other specified mononeuropathies of lower limb

Questions about G57.9

Is G57.9 a billable ICD-10-CM code?: No. G57.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G57.9 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Nerve, nerve root and plexus disorders (G50-G59).