2026 ICD-10-CM Diagnosis Code K00.7Teething syndrome

ICD-10-CM Codes›K00–K95›K00-K14›K00

ICD-10-CM K00.7
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K00.7 is a billable ICD-10-CM diagnosis code for teething syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 157 through 159. Coders also document this condition as finding of sensation of tooth. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury; Caries, periodontitis, and other preventable dental conditions; and Disorders of teeth and gingiva.

Code Identity

ICD-10-CM Code
K00.7
Billable Status
Yes — Valid for Submission
Code Describes
Teething syndrome
Short Description
Teething syndrome
Same as the full description in the CMS dataset.
Parent Code
K00
Disorders of tooth development and eruption

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK00Disorders of tooth development and eruption
This CodeK00.7Teething syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Finding of sensation of tooth
  • Painful teething
  • Teething syndrome
  • Toothache

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dentition(syndrome)
    • Dentition(syndrome)
      • difficult
    • Syndrome
      • teething
    • Teething(syndrome)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR DEN003
Caries, periodontitis, and other preventable dental conditions
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG002
Disorders of teeth and gingiva
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR DEN002
Nontraumatic dental conditions
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Toothache

    pain in the adjacent areas of the teeth.

  • Teething Syndrome

    an expected condition experienced by children during the emergence of deciduous teeth. though a full set of 20 primary teeth takes more than two years to emerge, teething syndrome may be variably noted from the first paired eruption (usually at the sixth month) until the last. characteristically, irritability, inflamed gingivae, drooling and chewing on solid objects may be seen several days prior to the eruption with rapid resolution. typically, the lower central incisors appear first followed by the upper central incisors. molars and canine teeth are the last to erupt. anecdotal associations with fever and diarrhea are misattributed.

  • Grade 1 Toothache, CTCAE|Grade 1 Toothache

    mild pain

  • Grade 2 Toothache, CTCAE|Grade 2 Toothache

    moderate pain; limiting instrumental adl

  • Grade 3 Toothache, CTCAE|Grade 3 Toothache

    severe pain; limiting self care adl

  • Toothache

    a painful sensation originating from a tooth.

  • Toothache, CTCAE|Toothache|Toothache

    a disorder characterized by a sensation of marked discomfort in the tooth.

  • Grade 2 Toothache, CTCAE|Grade 2 Toothache

    moderate pain; limiting instrumental adl or mild/moderate impact on age-appropriate normal daily activity (pediatric)

  • Grade 3 Toothache, CTCAE|Grade 3 Toothache

    severe pain; limiting self-care adl or severe impact on age-appropriate normal daily activity (pediatric)

Patient EducationClinical

Child Dental Health

Healthy teeth are important to your child's overall health. From the time your child is born, there are things you can do to promote healthy teeth and prevent cavities. For babies, you should clean teeth with a soft, clean cloth or baby's toothbrush.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K00.7 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
520.7 Teething syndrome
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K00.7Overview

Is K00.7 (Disorders of tooth development and eruption) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report teething syndrome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K00.7 group to?

When teething syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 157, 158, 159, with relative weights from 0.7085 to 1.7168 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K00.7?

Under the General Equivalence Mappings, teething syndrome converts to ICD-9-CM 520.7 (teething syndrome). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.