K04.6

Billable
ChapterK00–K95
Ranksubcategory
Official Description

Periapical abscess with sinus

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 11: Diseases of the Digestive System (K00-K95).

Instructional Notes

Includes
  • Dental abscess with sinus
  • Dentoalveolar abscess with sinus
General instructions are available for the parent sections:
View CH11 Notes

Clinical Hierarchy

CH11Diseases of the digestive system (K00-K95)
K00-K14Diseases of oral cavity and salivary glands (K00-K14)
K04Diseases of pulp and periapical tissues
K04.6Periapical abscess with sinus

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K04.6:

chapterCH11
Diseases of the digestive system (K00-K95)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to K04.6. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

16 raw paths
Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)10 unique routes
alveolar
with sinus→K04.6
apical (tooth)
with sinus (alveolar)→K04.6
dental
with sinus (alveolar)→K04.6
dentoalveolar
with sinus→K04.6
lateral (alveolar)
with sinus→K04.6
maxilla, maxillary
molar (tooth)
with sinus→K04.6
periapical
with sinus (alveolar)→K04.6
root, tooth
with sinus (alveolar)→K04.6
septal, dental
with sinus (alveolar)→K04.6
tooth, teeth (root)
with sinus (alveolar)→K04.6
Fistula (cutaneous)3 unique routes
alveolar process→K04.6
dental→K04.6
from periapical abscess→K04.6
Gumboil1 unique routes
with sinus→K04.6
Parulis1 unique routes
with sinus→K04.6
Sinus1 unique routes
dental→K04.6

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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