Is K08.40 a billable ICD-10-CM code?

No. K08.40 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does K08.40 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Diseases of oral cavity and salivary glands (K00-K14).

What cannot be coded together with K08.40?

K08.40 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 K08.40 (K08.4) and apply to it just the same.

K08.40

K08.40 — Partial loss of teeth, unspecified cause

Non-billable headerICD-10-CM

K08.40 is a non-billable header ICD-10-CM code for partial loss of teeth, unspecified cause. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above K08.40

These are not written on K08.40, but they bind it: a note on a category applies to every code beneath it. Billing K08.40 with anything listed here is a denial.

Written on K08.4 — Partial loss of teeth

complete loss of teeth (K08.1-)
congenital absence of teeth (K00.0)

Excludes2 inherited from the categories above K08.40

Also inherited, and the opposite of Excludes1: these conditions are not part of K08.40, but a patient can have both, so you may code both.

Written on K08.4 — Partial loss of teeth

exfoliation of teeth due to systemic causes (K08.0)

Written on K08 — Other disorders of teeth and supporting structures

dentofacial anomalies [including malocclusion] (M26.-)
disorders of jaw (M27.-)

Risk adjustment

K08.40 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

K08.40 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 K08.40

5 child codes. Green means billable.

Related codes at this level

Codes that share K08.4. If K08.40 is not quite right, the correct code is usually one of these.

Questions about K08.40

Is K08.40 a billable ICD-10-CM code?: No. K08.40 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does K08.40 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Diseases of oral cavity and salivary glands (K00-K14).
What cannot be coded together with K08.40?: K08.40 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 K08.40 (K08.4) and apply to it just the same.