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ICD-10-CM Code K00.4
Disturbances in tooth formation

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

K00.4 is a billable ICD code used to specify a diagnosis of disturbances in tooth formation. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code K004 is used to code Enamel hypoplasia

Enamel hypoplasia is a defect of the teeth in which the enamel is hard but thin and deficient in amount, caused by defective enamel matrix formation with a deficiency of vitamin D in the body. Usually the condition involves part of the tooth having a pit in it. In some cases, the natural enamel crown has a hole in it, and in extreme cases, the tooth has no enamel, which doesn't mean the tooth doesn't exist because dentin is also a component of teeth.

MeSH Codes: , , ,
ICD 9 Codes: 520.4, 520.4, 520.4, 520.4
Source: Wikipedia

Coding Notes for K00.4 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Aplasia and hypoplasia of cementum
Dilaceration of tooth
Enamel hypoplasia (neonatal) (postnatal) (prenatal)
Regional odontodysplasia
Turner's tooth
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Hutchinson's teeth and mulberry molars in congenital syphilis - instead, use code A50.5
Code Type-2 Excludes:
Type-2 Excludes
Type-2 Excludes means the excluded conditions are different, although they may appear similar. A patient may have both conditions, but one does not include the other. Excludes 2 means "not coded here."
Mottled teeth - instead, use code K00.3

MS-DRG Mapping

  • DRG Group #011-013 - Tracheostomy for face, mouth and neck diagnoses with MCC.
  • DRG Group #011-013 - Tracheostomy for face, mouth and neck diagnoses with CC.
  • DRG Group #011-013 - Tracheostomy for face, mouth and neck diagnoses without CC or MCC.
  • DRG Group #157-159 - Dental and oral diseases with MCC.
  • DRG Group #157-159 - Dental and oral diseases with CC.
  • DRG Group #157-159 - Dental and oral diseases without CC or MCC.

Related Concepts SNOMET-CT

  • Failure of exfoliation associated with lack of succedaneous tooth (disorder)
  • Failure of exfoliation associated with ectopic eruption of succedaneous tooth (disorder)
  • Dental caries associated with enamel hypoplasia (disorder)
  • Xeroderma, talipes and enamel defect syndrome (disorder)
  • Localized enamel hypoplasia associated with local infection (disorder)

ICD-10-CM Alphabetical Index References for 'K00.4 - Disturbances in tooth formation'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code K00.4. Click on any term below to browse the alphabetical index.

Odontodysplasia, regional (K00.4)
Dilaceration, tooth (K00.4)


Disturbances of tooth formation (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 520.4 was previously used, K00.4 is the appropriate modern ICD10 code.

Parent Code: K00 - Disorders of tooth development and eruption

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/K004