K04.5 – Chronic apical periodontitis
ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands
ICD-10-CM code
K04.5
- Code
K04.5(claims format:K045)- Description
- Chronic apical periodontitis
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K00-K14 Diseases of oral cavity and salivary glands
- Parent codes
- K04
Notes for K04.5
Applicable to:
- Apical or periapical granuloma
- Apical periodontitis NOS
Excludes1 (not coded here):
- chronic periodontitis (K05.3-)
Index terms for K04.5
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in K04
- K04.0 – PulpitisHeader
- K04.1 – Necrosis of pulpBillable
- K04.2 – Pulp degenerationBillable
- K04.3 – Abnormal hard tissue formation in pulpBillable
- K04.4 – Acute apical periodontitis of pulpal originBillable
- K04.6 – Periapical abscess with sinusBillable
- K04.7 – Periapical abscess without sinusBillable
- K04.8 – Radicular cystBillable
- K04.9 – Other and unspecified diseases of pulp and periapical tissuesHeader
Frequently asked questions
What is ICD-10 code K04.5?
K04.5 is the ICD-10-CM code for chronic apical periodontitis, in the block K00-K14 (Diseases of oral cavity and salivary glands).
Is K04.5 a billable code?
Yes. K04.5 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K04.5 belong to?
It belongs to category K04 – Diseases of pulp and periapical tissues.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.