K05.31
⚠ Non-billable (Header)Chronic periodontitis, localized
Diseases of the digestive system (K00-K95)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • chronic apical periodontitis (K04.5)
📋 Code Instructions
inherited- • code to identify:
- • alcohol abuse and dependence (F10.-)
- • exposure to environmental tobacco smoke (Z77.22)
- • exposure to tobacco smoke in the perinatal period (P96.81)
- • history of tobacco dependence (Z87.891)
- • occupational exposure to environmental tobacco smoke (Z57.31)
- • tobacco dependence (F17.-)
- • tobacco use (Z72.0)
Child Codes (4)
Clinical Description
ICD-10-CM code K05.31 represents chronic periodontitis, localized. This code falls under the Diseases of the digestive system (K00-K95) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 6-character code at the 5th level of specificity. There are 4 more specific child codes under K05.31. Coders should note that K05.31 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code K05.31?
ICD-10-CM code K05.31 is "Chronic periodontitis, localized". It belongs to the category: Diseases of the digestive system (K00-K95).
Is K05.31 a billable ICD-10 code?
No, K05.31 is a non-billable header code. A more specific child code must be used for billing.
What codes are excluded with K05.31?
K05.31 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in K05.3
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)