Billable / Specific Code
ICD-10-CM K60.421 is the diagnosis code for Rectal fistula, complex, initial. This code falls under the section "Other diseases of intestines" 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.
Understanding where K60.421 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, K60.421 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
K60.421 is the ICD-10-CM diagnosis code for "Rectal fistula, complex, initial". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of K60.421 is K60.42 ("Rectal fistula, complex"). K60.421 provides a more specific classification within this category.
K60.421 is located in Section K55-K64 — "Other diseases of intestines" within Chapter 11 of the ICD-10-CM Tabular List.
Use K60.421 when the patients documented diagnosis matches "Rectal fistula, complex, initial" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Rectal fistula, complex, initial is K60.421.
Yes, K60.421 can be used as a primary diagnosis code since it is billable and specific.
K60.421 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K60.421 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.