K04.5
Chronic apical periodontitis
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 9 never code together
K00-K95chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
K04.5code
Inclusion terms
- Apical or periapical granuloma
- Apical periodontitis NOS
Index entries leading here 3
Alongside this code 9 same parent — K04
K04.0 Pulpitis category K04.1 Necrosis of pulp K04.2 Pulp degeneration K04.3 Abnormal hard tissue formation in pulp K04.4 Acute apical periodontitis of pulpal origin K04.6 Periapical abscess with sinus K04.7 Periapical abscess without sinus K04.8 Radicular cyst K04.9 Other and unsp diseases of pulp and periapical tissues category
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.