K08.20 – Unspecified atrophy of edentulous alveolar ridge

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

Billable code

ICD-10-CM code K08.20

Code: K08.20 (claims format: K0820)
Description: Unspecified atrophy of edentulous alveolar ridge
Billable: Yes – valid for HIPAA-covered transactions
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 › K08.2

Notes for K08.20

Applicable to:

Atrophy of the mandible NOS
Atrophy of the maxilla NOS

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.-)

Index terms for K08.20

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in K08.2

K08.21 – Minimal atrophy of the mandibleBillable
K08.22 – Moderate atrophy of the mandibleBillable
K08.23 – Severe atrophy of the mandibleBillable
K08.24 – Minimal atrophy of maxillaBillable
K08.25 – Moderate atrophy of the maxillaBillable
K08.26 – Severe atrophy of the maxillaBillable

Frequently asked questions

What is ICD-10 code K08.20?

K08.20 is the ICD-10-CM code for unspecified atrophy of edentulous alveolar ridge, in the block K00-K14 (Diseases of oral cavity and salivary glands).

Is K08.20 a billable code?

Yes. K08.20 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K08.20 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.