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ICD-10-CM 2027 diagnosis code

K03Other diseases of hard tissues of teeth

Not billable — use a more specific code

K03 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K03

K03 is the ICD-10-CM diagnosis code for other diseases of hard tissues of teeth. It belongs to block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: K03.0 (teeth), K03.1 (teeth), K03.2 (teeth), K03.3 (teeth), K03.4 (Hypercementosis), K03.5 (teeth), K03.6 (teeth), K03.7 (tissues) and 2 more.

The conditions in its Excludes2 note aren't part of K03, but may be coded alongside it if the patient has both: bruxism (F45.8), dental caries (K02.-) and teeth-grinding NOS (F45.8).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under K03

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

Notes that apply from higher levels

Instructions written at a parent level also apply to K03.

Broader instructions also apply from Chapter 11: Diseases of the digestive system.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about K03

Is K03 billable?

No. K03 is a header code. Report one of its more specific subcodes instead.