Non-Billable / Non-Specific Code
ICD-10-CM O91 is the diagnosis code for Infections of breast associated with pregnancy, the puerperium and lactation. This code falls under the section "Complications predominantly related to the puerperium" within Chapter 15 — Pregnancy, childbirth and the puerperium (O00-O9A). 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.
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 O91 sits in the ICD-10-CM classification helps ensure proper coding:
No, O91 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
O91 is the ICD-10-CM diagnosis code for "Infections of breast associated with pregnancy, the puerperium and lactation". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
O91 is located in Section O85-O92 — "Complications predominantly related to the puerperium" within Chapter 15 of the ICD-10-CM Tabular List.
O91 has 3 sub-code(s) that provide more specific detail: O91.0, O91.1, O91.2.
Use O91 when the patients documented diagnosis matches "Infections of breast associated with pregnancy, the puerperium and lactation" 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 Infections of breast associated with pregnancy, the puerperium and lactation is O91.
No, O91 is non-billable. Use a more specific sub-code for primary diagnosis billing.
O91 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O91 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.