ICD-10-CM A40 is the diagnosis code for Streptococcal sepsis. This code falls under the section "Other bacterial diseases" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). 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 A40. They are mutually exclusive:
Understanding where A40 sits in the ICD-10-CM classification helps ensure proper coding:
No, A40 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
A40 is the ICD-10-CM diagnosis code for "Streptococcal sepsis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
A40 is located in Section A30-A49 — "Other bacterial diseases" within Chapter 1 of the ICD-10-CM Tabular List.
A40 has 5 sub-code(s) that provide more specific detail: A40.0, A40.1, A40.3, A40.8, A40.9.
Use A40 when the patients documented diagnosis matches "Streptococcal sepsis" 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 Streptococcal sepsis is A40.
No, A40 is non-billable. Use a more specific sub-code for primary diagnosis billing.
A40 is in Chapter 1 of the ICD-10-CM Tabular List.
Type 1 Excludes for A40 include: neonatal (P36.0-P36.1); puerperal sepsis (O85); sepsis due to Streptococcus, group D (A41.81).
Yes, A40 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.