K04.4

ICD-10Billable

Acute apical periodontitis of pulpal origin

Official ICD-10-CM descriptor (FY2026)

Acute apical periodontitis of pulpal origin

K04.4 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Acute apical periodontitis NOS

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • acute periodontitis (K05.2-)

Related codes in K04

Where this code sits

Parent code
K04

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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