K04.6

✓ Billable

Periapical abscess with sinus

Diseases of the digestive system (K00-K95)

Also Known As

Dental abscess with sinusDentoalveolar abscess with sinus

✓ No additional coding notes for K04.6

Clinical Description

ICD-10-CM code K04.6 represents periapical abscess with sinus. This code falls under the Diseases of the digestive system (K00-K95) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code K04.6?

ICD-10-CM code K04.6 is "Periapical abscess with sinus". It belongs to the category: Diseases of the digestive system (K00-K95).

Is K04.6 a billable ICD-10 code?

Yes, K04.6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Related Codes in K04

Other codes in the same category that may be relevant for differential coding:

K04.0Pulpitis K04.1Necrosis of pulp K04.2Pulp degeneration K04.3Abnormal hard tissue formation in pulp K04.4Acute apical periodontitis of pulpal origin K04.5Chronic apical periodontitis K04.7Periapical abscess without sinus K04.8Radicular cyst K04.9Other and unspecified diseases of pulp and periapical tissues

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Code Information

CodeK04.6

BillableYes

ParentK04

CategoryDiseases of the digestive system (K00-K95)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)