ICD-10 K00.2
Billable / SpecificAbnormalities of size and form of teeth
About ICD-10-CM K00.2
ICD-10-CM code K00.2 represents Abnormalities of size and form of teeth. This is a billable/specific code in the Digestive System chapter (block K00). The 2026 edition of ICD-10-CM K00.2 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under K00.2. Per CMS ICD-10-CM Tabular 2026.
- 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
Type 1 Excludes
Pure excludes, these codes can never be coded together with K00.2. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- abnormalities of teeth due to congenital syphilis (A50.5)
- tuberculum Carabelli, which is regarded as a normal variation and should not be coded
Medicare LCD Coverage for K00.2
Local Coverage Determinations (LCDs) from CMS MACs that list K00.2 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K00.2.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but K00.2 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with K00.2
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert K00.2 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| K00.2 | 5202 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K00.2
Other codes in section K00-K14 (Diseases of oral cavity and salivary glands).
ICD-10 K00.2, Billing FAQ
Is ICD-10 code K00.2 billable? +
Yes, K00.2 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to K00.2? +
ICD-10 K00.2 includes: Concrescence of teeth; Fusion of teeth; Gemination of teeth, and 10 more clinical synonyms.
What codes are Type 1 Excludes for K00.2? +
Type 1 Excludes (never code together with K00.2): abnormalities of teeth due to congenital syphilis (A50.5); tuberculum Carabelli, which is regarded as a normal variation and should not be coded
What ICD-9 codes does K00.2 map to? +
Per CMS GEMs, K00.2 maps to ICD-9 codes: 5202. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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