Is M89.05 a billable ICD-10-CM code?

No. M89.05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does M89.05 sit in the tabular list?

Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other osteopathies (M86-M90).

What cannot be coded together with M89.05?

M89.05 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above M89.05 (M89.0) and apply to it just the same.

M89.05

M89.05 — Algoneurodystrophy, thigh

Non-billable headerICD-10-CM

M89.05 is a non-billable header ICD-10-CM code for algoneurodystrophy, thigh. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above M89.05

These are not written on M89.05, but they bind it: a note on a category applies to every code beneath it. Billing M89.05 with anything listed here is a denial.

Written on M89.0 — Algoneurodystrophy

causalgia, lower limb (G57.7-)
causalgia, upper limb (G56.4-)
complex regional pain syndrome II, lower limb (G57.7-)
complex regional pain syndrome II, upper limb (G56.4-)
reflex sympathetic dystrophy (G90.5-)

Risk adjustment

M89.05 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

M89.05 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 M89.05

3 child codes. Green means billable.

Related codes at this level

Codes that share M89.0. If M89.05 is not quite right, the correct code is usually one of these.

Questions about M89.05

Is M89.05 a billable ICD-10-CM code?: No. M89.05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does M89.05 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other osteopathies (M86-M90).
What cannot be coded together with M89.05?: M89.05 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above M89.05 (M89.0) and apply to it just the same.