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K00.2

K00.2Abnormalities of size and form of teeth

Billable / specific codeICD-10-CM

K00.2 is a billable, specific ICD-10-CM code for abnormalities of size and form of teeth. It is valid for submission on a claim.

Excludes1 — never code together

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

  • abnormalities of teeth due to congenital syphilis (A50.5)
  • tuberculum Carabelli, which is regarded as a normal variation and should not be coded

Inclusion terms

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

  • Concrescence of teeth
  • Fusion of teeth
  • Gemination of teeth
  • Dens evaginatus
  • Dens in dente
  • Dens invaginatus
  • Enamel pearls
  • Macrodontia
  • Microdontia
  • Peg-shaped [conical] teeth
  • Supernumerary roots
  • Taurodontism
  • Tuberculum paramolare

Risk adjustment

K00.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How K00.2 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K00.2.

  • Concrescence(teeth)
  • Dens evaginatus, in dente or invaginatus
  • Dichotomy, teeth
  • Enamel pearls
  • Enameloma
  • Gemination, tooth, teeth
  • Macrodontia
  • Microdontia
  • Molarization of premolars
  • Peg-shaped teeth
  • Predeciduous teeth
  • Premolarization, cuspids

Related codes at this level

Codes that share K00. If K00.2 is not quite right, the correct code is usually one of these.

Questions about K00.2

Is K00.2 a billable ICD-10-CM code?
Yes. K00.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does K00.2 sit in the tabular list?
Diseases of the digestive system (K00-K95), in the block Diseases of oral cavity and salivary glands (K00-K14).
What cannot be coded together with K00.2?
K00.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 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.