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O99.119

O99.119: Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester

Billable / specific codeICD-10-CM

O99.119 is a billable, specific ICD-10-CM code for other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester. It is valid for submission on a claim.

Check O99.119 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above O99.119

A category’s note binds every code beneath it.

Written on O99.1: Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium

Excludes2 inherited from the categories above O99.119

Not part of this code, but both may be coded when both are present.

Written on O99: Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

  • when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under O99.11

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.