ICD-10-CM S40.021 is the diagnosis code for Contusion of right upper arm. This code falls under the section "Injuries to the shoulder and upper arm" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). 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.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where S40.021 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, S40.021 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
S40.021 is the ICD-10-CM diagnosis code for "Contusion of right upper arm". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of S40.021 is S40.02 ("Contusion of upper arm"). S40.021 provides a more specific classification within this category.
S40.021 is located in Section S40-S49 — "Injuries to the shoulder and upper arm" within Chapter 19 of the ICD-10-CM Tabular List.
Use S40.021 when the patients documented diagnosis matches "Contusion of right upper arm" 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 Contusion of right upper arm is S40.021.
Yes, S40.021 can be used as a primary diagnosis code since it is billable and specific.
S40.021 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, S40.021 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.