Is G70 a billable ICD-10-CM code?

No. G70 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does G70 sit in the tabular list?

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

What cannot be coded together with G70?

G70 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

G70

G70 — Myasthenia gravis and other myoneural disorders

Non-billable headerICD-10-CM

G70 is a non-billable header ICD-10-CM code for myasthenia gravis and other myoneural disorders. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

botulism (A05.1, A48.51-A48.52)
transient neonatal myasthenia gravis (P94.0)

Other codes that can never be billed with G70

These codes carry an Excludes1 note pointing at G70. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G70 alone.

E32Diseases of thymus
G73.1Lambert-Eaton syndrome in neoplastic disease
P94.0Transient neonatal myasthenia gravis

Risk adjustment

G70 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 history

G70 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead G70

5 child codes. Green means billable.

Questions about G70

Is G70 a billable ICD-10-CM code?: No. G70 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G70 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Diseases of myoneural junction and muscle (G70-G73).
What cannot be coded together with G70?: G70 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.