O99.1
Non-billableOther diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium
O99.1 is the ICD-10-CM code for Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium. It is a non-billable category code — use a more specific child code such as O99.11 for billing.
O00-O9A Pregnancy, childbirth and the puerperium
Frequently asked questions
- What is ICD-10 code O99.1?
- O99.1 is the ICD-10-CM code for "Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
- Is O99.1 a billable code?
- No — O99.1 is a non-billable header code. Use a more specific child code (such as O99.11) for billing.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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