2026 ICD-10-CM Diagnosis Code K06.020Generalized gingival recession, unspecified

ICD-10-CM Codes›K00–K95›K00-K14›K06

ICD-10-CM K06.020
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K06.020 is a billable ICD-10-CM diagnosis code for generalized gingival recession, unspecified. 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 atrophy of gums. 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
K06.020
Billable Status
Yes — Valid for Submission
Code Describes
Generalized gingival recession, unspecified
Short Description
Generalized gingival recession, unspecified
Same as the full description in the CMS dataset.
Parent Code
K06.02
Gingival recession, generalized

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK00-K14Diseases of oral cavity and salivary glands
CategoryK06Other disorders of gingiva and edentulous alveolar ridge
This CodeK06.020Generalized gingival recession, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Atrophy of gums
  • Generalized gingival recession
  • Gingival papillary blunting
  • Gingival recession following infectious disease

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Generalized gingival recession, NOS

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.

    • Recession, receding
      • gingival (postinfective) (postoperative)
        • generalized

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

Convert K06.020 to ICD-9-CMHistory

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

ICD-9-CM
523.25 Gingival recess-general
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
523.20 Gingival recession NOS
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

Code History & ChangesHistory

Replacement K06.020 replaces the following previously assigned code(s):

  • K06.0 - Gingival recession
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K06.020Overview

Is K06.020 (Gingival recession, generalized) a billable code?

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

What MS-DRG does K06.020 group to?

When generalized gingival recession, unspecified 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 K06.020?

Under the General Equivalence Mappings, generalized gingival recession, unspecified converts to ICD-9-CM 523.25 (gingival recess-general) and 523.20 (gingival recession NOS). The mapping is approximate, so confirm the match fits the documentation.

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.