ICD-10-CM 2027 diagnosis code
K08.89Other specified disorders of teeth and supporting structures
K08.89 is a valid, billable ICD-10-CM code for other specified disorders of teeth and supporting structures. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Toothache, ICD-10 code for Odontalgia, ICD-10 code for Odontorrhagia.
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K08.89
K08.89 is the ICD-10-CM diagnosis code for other specified disorders of teeth and supporting structures. It belongs to category K08 (other disorders of teeth and supporting structures), block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within K08.8, choose K08.89 (Other specified disorders of teeth and supporting structures) only when documentation doesn't support a more specific option: primary occlusal trauma (K08.81) and secondary occlusal trauma (K08.82).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 157 (Dental and Oral Diseases with MCC, relative weight 1.809), DRG 158 (Dental and Oral Diseases with CC, relative weight 0.9366) and DRG 159 (Dental and Oral Diseases without CC/MCC, relative weight 0.6893), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It was added in FY2017, effective October 1, 2016.
Before ICD-10, this condition was coded in ICD-9-CM as 525.8 (other specified disorders of the teeth and supporting structures).
Coding notes
- Enlargement of alveolar ridge NOS
- Insufficient anatomic crown height
- Insufficient clinical crown length
- Irregular alveolar process
- Toothache NOS
Notes that apply from higher levels
Instructions written at a parent level also apply to K08.89.
Broader instructions also apply from Chapter 11: Diseases of the digestive system.
Alphabetic index entries
16 entriesTerms in the official ICD-10-CM index that lead to K08.89.
- Disease, diseased › supporting structures of teeth › specified NEC
- Disease, diseased › tooth, teeth › specified NEC
- Enlargement, enlarged › alveolar ridge
- Hemorrhage, hemorrhagic (concealed) › alveolar › process
- Hemorrhage, hemorrhagic (concealed) › alveolus
- Impaired, impairment (function) › mastication
- Insufficiency, insufficient › anatomic crown height
- Insufficiency, insufficient › clinical crown length
- Irregular, irregularity › alveolar process
- Loose › tooth, teeth
- Obliteration › vestibule (oral)
- Odontalgia
- Odontorrhagia
- Pain (s) › tooth
- Problem (with) (related to) › mastication
- Toothache
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC PRE · Pre-MDC
MDC 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat
ICD-9-CM equivalent
Converter →- 525.8Other specified disorders of the teeth and supporting structuresapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2017 (effective 10/1/2016): Added
- No changes since FY2017.
Common questions about K08.89
Is K08.89 billable?
- Yes. K08.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K08.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K08.89 as a principal diagnosis.
Is K08.89 a CC or MCC?
- No. K08.89 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does K08.89 group to?
- K08.89 is used in the MS-DRG v44.0 logic for MS-DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC), MS-DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC), MS-DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC), MS-DRG 157 (Dental and Oral Diseases with MCC), MS-DRG 158 (Dental and Oral Diseases with CC) and MS-DRG 159 (Dental and Oral Diseases without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for K08.89?
- The CMS General Equivalence Mappings map K08.89 to ICD-9-CM 525.8.