Reserved for future guideline expansion
K00.2
Abnormalities of size and form of teeth
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
K00.2code
K00-K95chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 13
K00.2code
Inclusion terms
- 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
Official Guidelines 1 names this code
ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.
Index entries leading here 29
- Abnormal, abnormality, abnormalities — see also Anomaly
- Accessory (congenital)
- roots (teeth) K00.2
- Anomaly, anomalous (congenital) (unspecified type) Q89.9
- form, teeth K00.2
- Tuberculum
- Concrescence (teeth) K00.2
- Conical
- teeth K00.2
- Deformity Q89.9
- tooth, teeth K00.2
- Dens evaginatus, in dente or invaginatus K00.2
- Dichotomy, teeth K00.2
- Elongated, elongation (congenital) — see also Distortion
- tooth, teeth K00.2
- Pearl (s)
- enamel K00.2
- Enameloma K00.2
- Enamel pearls K00.2
- Fusion, fused (congenital)
- tooth, teeth K00.2
- Gemination, tooth, teeth K00.2
- Macrodontia K00.2
- Microdontia K00.2
- Molarization of premolars K00.2
- Peg-shaped teeth K00.2
- Predeciduous teeth K00.2
- Premolarization, cuspids K00.2
- Supernumerary (congenital)
- roots (of teeth) K00.2
- Schizodontia K00.2
- Shovel-shaped incisors K00.2
- Spicule tooth K00.2
- Synodontia K00.2
- Taurodontism K00.2
- T-shaped incisors K00.2
- Twinning, teeth K00.2
Alongside this code 9 same parent — K00
K00.0 Anodontia K00.1 Supernumerary teeth K00.3 Mottled teeth K00.4 Disturbances in tooth formation K00.5 Hereditary disturbances in tooth structure, NEC K00.6 Disturbances in tooth eruption K00.7 Teething syndrome K00.8 Other disorders of tooth development K00.9 Disorder of tooth development, unspecified
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.