Billable / Specific Code
ICD-10-CM D43.9 is the diagnosis code for Neoplasm of uncertain behavior of central nervous system, unspecified. This code falls under the section "Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes" 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 D43.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, D43.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
D43.9 is the ICD-10-CM diagnosis code for "Neoplasm of uncertain behavior of central nervous system, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of D43.9 is D43 ("Neoplasm of uncertain behavior of brain and central nervous system"). D43.9 provides a more specific classification within this category.
D43.9 is located in Section D37-D48 — "Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes" within Chapter 2 of the ICD-10-CM Tabular List.
Use D43.9 when the patients documented diagnosis matches "Neoplasm of uncertain behavior of central nervous system, unspecified" 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 Neoplasm of uncertain behavior of central nervous system, unspecified is D43.9.
Yes, D43.9 can be used as a primary diagnosis code since it is billable and specific.
D43.9 is in Chapter 2 of the ICD-10-CM Tabular List.
Yes, D43.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.