K00.9 – Disorder of tooth development, unspecified

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

Billable code

ICD-10-CM code K00.9

Code: K00.9 (claims format: K009)
Description: Disorder of tooth development, unspecified
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: K00

Notes for K00.9

Applicable to:

Disorder of odontogenesis NOS

Notes inherited from parent codes

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

K00 – Disorders of tooth development and eruption

Excludes2 (not included here):

embedded and impacted teeth (K01.-)

Index terms for K00.9

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

Related codes in K00

K00.0 – AnodontiaBillable
K00.1 – Supernumerary teethBillable
K00.2 – Abnormalities of size and form of teethBillable
K00.3 – Mottled teethBillable
K00.4 – Disturbances in tooth formationBillable
K00.5 – Hereditary disturbances in tooth structure, not elsewhere classifiedBillable
K00.6 – Disturbances in tooth eruptionBillable
K00.7 – Teething syndromeBillable
K00.8 – Other disorders of tooth developmentBillable

Frequently asked questions

What is ICD-10 code K00.9?

K00.9 is the ICD-10-CM code for disorder of tooth development, unspecified, in the block K00-K14 (Diseases of oral cavity and salivary glands).

Is K00.9 a billable code?

Yes. K00.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K00.9 belong to?

It belongs to category K00 – Disorders of tooth development and eruption.

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.