Billable / Specific Code
ICD-10-CM D13.99 is the diagnosis code for Benign neoplasm of ill-defined sites within the digestive system. This code falls under the section "Benign neoplasms, except benign neuroendocrine tumors" within Chapter 2 — Neoplasms (C00-D49). 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 D13.99 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, D13.99 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
D13.99 is the ICD-10-CM diagnosis code for "Benign neoplasm of ill-defined sites within the digestive system". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of D13.99 is D13.9 ("Benign neoplasm of ill-defined sites within the digestive system"). D13.99 provides a more specific classification within this category.
D13.99 is located in Section D10-D36 — "Benign neoplasms, except benign neuroendocrine tumors" within Chapter 2 of the ICD-10-CM Tabular List.
Use D13.99 when the patients documented diagnosis matches "Benign neoplasm of ill-defined sites within the digestive system" 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 Benign neoplasm of ill-defined sites within the digestive system is D13.99.
Yes, D13.99 can be used as a primary diagnosis code since it is billable and specific.
D13.99 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, D13.99 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.