K00.4

ICD-10Billable

Disturbances in tooth formation

Official ICD-10-CM descriptor (FY2026)

Disturbances in tooth formation

K00.4 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

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

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

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

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

  • mottled teeth (K00.3)

Related codes in K00

Where this code sits

Parent code
K00

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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