MCMedicalCodingSoftware
K00.4

K00.4: Disturbances in tooth formation

Billable / specific codeICD-10-CM

K00.4 is a billable, specific ICD-10-CM code for disturbances in tooth formation. It is valid for submission on a claim.

Check K00.4 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • Hutchinson's teeth and mulberry molars in congenital syphilis (A50.5)

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Aplasia and hypoplasia of cementum
  • Dilaceration of tooth
  • Enamel hypoplasia (neonatal) (postnatal) (prenatal)
  • Regional odontodysplasia
  • Turner's tooth

Excludes2 inherited from the categories above K00.4

Not part of this code, but both may be coded when both are present.

Written on K00: Disorders of tooth development and eruption

  • embedded and impacted teeth (K01.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Dilaceration, tooth
  • Odontodysplasia, regional
  • Amelogenesis imperfecta›nonhereditaria(segmentalis)
  • Aplasia›cementum
  • Calcification›dentinal papilla
  • Ghost›teeth
  • Hypoplasia, hypoplastic›cementum
  • Hypoplasia, hypoplastic›enamel of teeth(neonatal) (postnatal) (prenatal)
  • Hypoplasia, hypoplastic›Turner's
  • Pitting›teeth
  • Turner's›hypoplasia(tooth)
  • Turner's›tooth

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under K00

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.