Non-Billable / Non-Specific Code
ICD-10-CM D21 is the diagnosis code for Other benign neoplasms of connective and other soft tissue. This code falls under the section "Benign neoplasms, except benign neuroendocrine tumors" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as D21. They are mutually exclusive:
Understanding where D21 sits in the ICD-10-CM classification helps ensure proper coding:
No, D21 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
D21 is the ICD-10-CM diagnosis code for "Other benign neoplasms of connective and other soft tissue". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
D21 is located in Section D10-D36 — "Benign neoplasms, except benign neuroendocrine tumors" within Chapter 2 of the ICD-10-CM Tabular List.
D21 has 8 sub-code(s) that provide more specific detail: D21.0, D21.1, D21.2, D21.3, D21.4 and more.
Use D21 when the patients documented diagnosis matches "Other benign neoplasms of connective and other soft tissue" 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 Other benign neoplasms of connective and other soft tissue is D21.
No, D21 is non-billable. Use a more specific sub-code for primary diagnosis billing.
D21 is in Chapter 2 of the ICD-10-CM Tabular List.
Type 1 Excludes for D21 include: benign neoplasm of articular cartilage (D16.-); benign neoplasm of cartilage of larynx (D14.1); benign neoplasm of cartilage of nose (D14.0) and more.
Yes, D21 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.