K05.31
⚠ Non-billable
Chronic periodontitis, localized
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K05.31
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code K05.31?
ICD-10-CM code K05.31 represents Chronic periodontitis, localized. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K05.31 billable?
No. K05.31 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is K05.31 in?
K05.31 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K05 category
K05
Gingivitis and periodontal diseases
Non-billable
K05.0
Acute gingivitis
Non-billable
K05.1
Chronic gingivitis
Non-billable
K05.2
Aggressive periodontitis
Non-billable
K05.3
Chronic periodontitis
Non-billable
K05.4
Periodontosis
Billable
K05.5
Other periodontal diseases
Billable
K05.6
Periodontal disease, unspecified
Billable
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