Is G71.1 a billable ICD-10-CM code?

No. G71.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does G71.1 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Diseases of myoneural junction and muscle (G70-G73).

G71.1

G71.1 — Myotonic disorders

Non-billable headerICD-10-CM

G71.1 is a non-billable header ICD-10-CM code for myotonic disorders. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with G71.1

These codes carry an Excludes1 note pointing at G71.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G71.1 alone.

E31Polyglandular dysfunction
G72.3Periodic paralysis

Risk adjustment

G71.1 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 G71.1

5 child codes. Green means billable.

Related codes at this level

Codes that share G71. If G71.1 is not quite right, the correct code is usually one of these.

Questions about G71.1

Is G71.1 a billable ICD-10-CM code?: No. G71.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G71.1 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Diseases of myoneural junction and muscle (G70-G73).