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O98 ICD-10-CA category: Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

O98 isn’t a code on its own. Choose one of the 50 codes beneath it, the one the documentation supports.

Official description

O98

Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

ICD-10-CA · Canada

Codes in O98

O98 isn’t a code on its own. Open the group that matches what the note documents.

O98.0Tuberculosis complicating pregnancy, childbirth and the puerperium (5 codes)O98.1Syphilis complicating pregnancy, childbirth and the puerperium (5 codes)O98.2Gonorrhoea complicating pregnancy, childbirth and the puerperium (5 codes)O98.3Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium (5 codes)O98.4Viral hepatitis complicating pregnancy, childbirth and the puerperium (5 codes)O98.5Other viral diseases complicating pregnancy, childbirth and the puerperium (5 codes)O98.6Protozoal diseases complicating pregnancy, childbirth and the puerperium (5 codes)O98.7Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium (5 codes)O98.8Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (5 codes)O98.9Unspecified maternal infectious or parasitic disease complicating pregnancy, childbirth and the puerperium (5 codes)

Notes for O98

As CIHI prints them, with any note O98 takes from the headings above it.

Includes

  • The listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code (Chapter I) to identify specific condition.
  • Use additional code (U82-U84) to identify resistance to antimicrobial drugs

Excludes

Conditions classified elsewhere.

  • Asymptomatic human immunodeficiency virus [HIV] infection status (Z21)laboratory evidence of human immunodeficiency virus [HIV] (R75)obstetrical tetanus (A34)puerperal:• infection (O86.-)• sepsis (O85)when the reason for maternal care is that the disease is known or suspected to have affected the fetus (O35-O36)
  • Certain diseases or injuries complicating pregnancy, childbirth, and the puerperium classified elsewhere:external causes (for mortality) (V,W,X,Y)injury, poisoning and certain other consequences of external causes (S00-T88.1, T88.6-T98)mental and behavioural disorders associated with the puerperium (F53.-)obstetrical tetanus (A34)postpartum necrosis of pituitary gland (E23.0)puerperal osteomalacia (M83.0)supervision of:• high-risk pregnancy (Z35.-)• normal pregnancy (Z34.-)From Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99)

Note

  • For use of categories O95-O97 reference should be made to the mortality coding rules and guidelines.From O94-O99 Other obstetric conditions, not elsewhere classified
  • The codes included in this chapter are to be used for conditions related to or aggravated by the pregnancy, childbirth or by the puerperium (maternal causes or obstetric causes)From Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99)

Where O98 sits

  1. 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
  2. 2Block O94-O99Other obstetric conditions, not elsewhere classified
  3. 3Category O98Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See O98 in the CIHI source

Frequently asked questions

Is O98 a valid ICD-10-CA code?

No. O98 (Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 50 codes; record the one the documentation supports.

Where is O98 in ICD-10-CA?

O98 sits under O94-O99 Other obstetric conditions, not elsewhere classified, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).

What coding notes apply to O98?

ICD-10-CA lists Includes, Use additional code, Excludes, Note notes for O98, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside O98

O94Sequelae of complication of pregnancy, childbirth and the puerperiumO95Obstetric death of unspecified causeO96Death from any obstetric cause occurring more than 42 days but less than one year after deliveryO97Death from sequelae of obstetric causesO99Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium