K04.8
Billable

Radicular cyst

Billable / Specific Code

What is Radicular cyst?

ICD-10-CM K04.8 is the diagnosis code for Radicular cyst. This code falls under the section "Diseases of oral cavity and salivary glands" within Chapter 11 — Diseases of the digestive system (K00-K95). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions
â„šī¸ Excludes2

Coding Guidelines for K04.8

✅ This Code Includes

  • Apical (periodontal) cyst
  • Periapical cyst
  • Residual radicular cyst

â„šī¸ Type 2 Excludes (Code separately if applicable)

The following conditions are not included in K04.8. If the patient has both, code each condition separately:

  • lateral periodontal cyst (K09.0)

ICD-10-CM Code Hierarchy

Understanding where K04.8 sits in the ICD-10-CM classification helps ensure proper coding:

Related Codes

Frequently Asked Questions

Is K04.8 a billable ICD-10-CM code?

Yes, K04.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What does K04.8 mean?

K04.8 is the ICD-10-CM diagnosis code for "Radicular cyst". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of K04.8?

The parent code of K04.8 is K04 ("Diseases of pulp and periapical tissues"). K04.8 provides a more specific classification within this category.

What section is K04.8 in?

K04.8 is located in Section K00-K14 — "Diseases of oral cavity and salivary glands" within Chapter 11 of the ICD-10-CM Tabular List.

When should I use K04.8?

Use K04.8 when the patients documented diagnosis matches "Radicular cyst" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Radicular cyst?

The ICD-10-CM code for Radicular cyst is K04.8.

Can K04.8 be used for primary diagnosis?

Yes, K04.8 can be used as a primary diagnosis code since it is billable and specific.

What chapter is K04.8 in?

K04.8 is in Chapter 11 of the ICD-10-CM Tabular List.

Is K04.8 valid for 2026?

Yes, K04.8 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousK04.7Periapical abscess without sinusNext →K04.9Other and unspecified diseases of pulp and periapical tissues
Code Details
K04.8
Radicular cyst
Billable / Specific Code
11 — Diseases of the digestive system (K00-K95)
K00-K14 — Diseases of oral cavity and salivary glands
2026 ICD-10-CM