K08.42 – Partial loss of teeth due to periodontal diseases

ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands

Non-billable header

ICD-10-CM code K08.42

Code: K08.42 (claims format: K0842)
Description: Partial loss of teeth due to periodontal diseases
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 11. Diseases of the digestive system (K00-K95)
Block: K00-K14 Diseases of oral cavity and salivary glands
Parent codes: K08 › K08.4

Billable codes under K08.42

K08.42 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

K08 – Other disorders of teeth and supporting structures

Excludes2 (not included here):

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

K08.4 – Partial loss of teeth

Applicable to:

Acquired loss of teeth, partial

Excludes1 (not coded here):

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

Excludes2 (not included here):

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

Related codes in K08.4

Frequently asked questions

What is ICD-10 code K08.42?

K08.42 is the ICD-10-CM code for partial loss of teeth due to periodontal diseases, in the block K00-K14 (Diseases of oral cavity and salivary glands).

Is K08.42 a billable code?

No. K08.42 is a header code with more specific child codes; report one of the billable codes listed above.

What category does K08.42 belong to?

It belongs to category K08 – Other disorders of teeth and supporting structures.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.