K04.3 – Abnormal hard tissue formation in pulp

ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands

Billable code

ICD-10-CM code K04.3

Code: K04.3 (claims format: K043)
Description: Abnormal hard tissue formation in pulp
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 K04.3

Applicable to:

Secondary or irregular dentine

Index terms for K04.3

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
K04.4 – Acute apical periodontitis of pulpal originBillable
K04.5 – Chronic apical periodontitisBillable
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 K04.3?

K04.3 is the ICD-10-CM code for abnormal hard tissue formation in pulp, in the block K00-K14 (Diseases of oral cavity and salivary glands).

Is K04.3 a billable code?

Yes. K04.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K04.3 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.