ICD-10 · PDGM grouping
O98 Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
All 60 codes in the O98 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
60
Can lead a claim
45
Cannot lead a claim
15
What CMS assigns to O98
45 of the 60 codes group to MMTA - Other; 15 are assigned no clinical group. None of the 60 is assigned a comorbidity subgroup. 45 of the 60 can lead a claim.
Every code in O98
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| O98.0 Tuberculosis complicating pregnancy, childbirth and the puerperium | ||||
| O98.01 Tuberculosis complicating pregnancy | ||||
| O98.011 | Tuberculosis complicating pregnancy, first trimester | Can lead a claim | A | None |
| O98.012 | Tuberculosis complicating pregnancy, second trimester | Can lead a claim | A | None |
| O98.013 | Tuberculosis complicating pregnancy, third trimester | Can lead a claim | A | None |
| O98.019 | Tuberculosis complicating pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.02 | Tuberculosis complicating childbirth | Can lead a claim | A | None |
| O98.03 | Tuberculosis complicating the puerperium | Can lead a claim | A | None |
| O98.1 Syphilis complicating pregnancy, childbirth and the puerperium | ||||
| O98.11 Syphilis complicating pregnancy | ||||
| O98.111 | Syphilis complicating pregnancy, first trimester | Can lead a claim | A | None |
| O98.112 | Syphilis complicating pregnancy, second trimester | Can lead a claim | A | None |
| O98.113 | Syphilis complicating pregnancy, third trimester | Can lead a claim | A | None |
| O98.119 | Syphilis complicating pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.12 | Syphilis complicating childbirth | Can lead a claim | A | None |
| O98.13 | Syphilis complicating the puerperium | Can lead a claim | A | None |
| O98.2 Gonorrhea complicating pregnancy, childbirth and the puerperium | ||||
| O98.21 Gonorrhea complicating pregnancy | ||||
| O98.211 | Gonorrhea complicating pregnancy, first trimester | Can lead a claim | A | None |
| O98.212 | Gonorrhea complicating pregnancy, second trimester | Can lead a claim | A | None |
| O98.213 | Gonorrhea complicating pregnancy, third trimester | Can lead a claim | A | None |
| O98.219 | Gonorrhea complicating pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.22 | Gonorrhea complicating childbirth | Can lead a claim | A | None |
| O98.23 | Gonorrhea complicating the puerperium | Can lead a claim | A | None |
| O98.3 Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium | ||||
| O98.31 Other infections with a predominantly sexual mode of transmission complicating pregnancy | ||||
| O98.311 | Other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimesterCMS: Oth infect w sexl mode of transmiss comp preg, first tri | Can lead a claim | A | None |
| O98.312 | Other infections with a predominantly sexual mode of transmission complicating pregnancy, second trimesterCMS: Oth infect w sexl mode of transmiss comp preg, second tri | Can lead a claim | A | None |
| O98.313 | Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimesterCMS: Oth infect w sexl mode of transmiss comp preg, third tri | Can lead a claim | A | None |
| O98.319 | Other infections with a predominantly sexual mode of transmission complicating pregnancy, unspecified trimesterCMS: Oth infect w sexl mode of transmiss comp preg, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.32 | Other infections with a predominantly sexual mode of transmission complicating childbirthCMS: Oth infections w sexl mode of transmiss comp childbirth | Can lead a claim | A | None |
| O98.33 | Other infections with a predominantly sexual mode of transmission complicating the puerperiumCMS: Oth infections w sexl mode of transmiss comp the puerperium | Can lead a claim | A | None |
| O98.4 Viral hepatitis complicating pregnancy, childbirth and the puerperium | ||||
| O98.41 Viral hepatitis complicating pregnancy | ||||
| O98.411 | Viral hepatitis complicating pregnancy, first trimester | Can lead a claim | A | None |
| O98.412 | Viral hepatitis complicating pregnancy, second trimester | Can lead a claim | A | None |
| O98.413 | Viral hepatitis complicating pregnancy, third trimester | Can lead a claim | A | None |
| O98.419 | Viral hepatitis complicating pregnancy, unspecified trimesterCMS: Viral hepatitis complicating pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.42 | Viral hepatitis complicating childbirth | Can lead a claim | A | None |
| O98.43 | Viral hepatitis complicating the puerperium | Can lead a claim | A | None |
| O98.5 Other viral diseases complicating pregnancy, childbirth and the puerperium | ||||
| O98.51 Other viral diseases complicating pregnancy | ||||
| O98.511 | Other viral diseases complicating pregnancy, first trimester | Can lead a claim | A | None |
| O98.512 | Other viral diseases complicating pregnancy, second trimesterCMS: Oth viral diseases complicating pregnancy, second trimester | Can lead a claim | A | None |
| O98.513 | Other viral diseases complicating pregnancy, third trimester | Can lead a claim | A | None |
| O98.519 | Other viral diseases complicating pregnancy, unspecified trimesterCMS: Other viral diseases complicating pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.52 | Other viral diseases complicating childbirth | Can lead a claim | A | None |
| O98.53 | Other viral diseases complicating the puerperium | Can lead a claim | A | None |
| O98.6 Protozoal diseases complicating pregnancy, childbirth and the puerperium | ||||
| O98.61 Protozoal diseases complicating pregnancy | ||||
| O98.611 | Protozoal diseases complicating pregnancy, first trimester | Can lead a claim | A | None |
| O98.612 | Protozoal diseases complicating pregnancy, second trimester | Can lead a claim | A | None |
| O98.613 | Protozoal diseases complicating pregnancy, third trimester | Can lead a claim | A | None |
| O98.619 | Protozoal diseases complicating pregnancy, unspecified trimesterCMS: Protozoal diseases complicating pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.62 | Protozoal diseases complicating childbirth | Can lead a claim | A | None |
| O98.63 | Protozoal diseases complicating the puerperium | Can lead a claim | A | None |
| O98.7 Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium | ||||
| O98.71 Human immunodeficiency virus [HIV] disease complicating pregnancy | ||||
| O98.711 | Human immunodeficiency virus [HIV] disease complicating pregnancy, first trimesterCMS: Human immunodef virus disease comp preg, first trimester | Can lead a claim | A | None |
| O98.712 | Human immunodeficiency virus [HIV] disease complicating pregnancy, second trimesterCMS: Human immunodef virus disease comp preg, second trimester | Can lead a claim | A | None |
| O98.713 | Human immunodeficiency virus [HIV] disease complicating pregnancy, third trimesterCMS: Human immunodef virus disease comp preg, third trimester | Can lead a claim | A | None |
| O98.719 | Human immunodeficiency virus [HIV] disease complicating pregnancy, unspecified trimesterCMS: Human immunodef virus disease comp pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.72 | Human immunodeficiency virus [HIV] disease complicating childbirthCMS: Human immunodeficiency virus disease complicating childbirth | Can lead a claim | A | None |
| O98.73 | Human immunodeficiency virus [HIV] disease complicating the puerperiumCMS: Human immunodef virus disease complicating the puerperium | Can lead a claim | A | None |
| O98.8 Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium | ||||
| O98.81 Other maternal infectious and parasitic diseases complicating pregnancy | ||||
| O98.811 | Other maternal infectious and parasitic diseases complicating pregnancy, first trimesterCMS: Oth maternal infec/parastc diseases comp preg, first tri | Can lead a claim | A | None |
| O98.812 | Other maternal infectious and parasitic diseases complicating pregnancy, second trimesterCMS: Oth maternal infec/parastc diseases comp preg, second tri | Can lead a claim | A | None |
| O98.813 | Other maternal infectious and parasitic diseases complicating pregnancy, third trimesterCMS: Oth maternal infec/parastc diseases comp preg, third tri | Can lead a claim | A | None |
| O98.819 | Other maternal infectious and parasitic diseases complicating pregnancy, unspecified trimesterCMS: Oth maternal infec/parastc diseases comp preg, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.82 | Other maternal infectious and parasitic diseases complicating childbirthCMS: Oth maternal infec/parastc diseases complicating childbirth | Can lead a claim | A | None |
| O98.83 | Other maternal infectious and parasitic diseases complicating the puerperiumCMS: Oth maternal infec/parastc diseases comp the puerperium | Can lead a claim | A | None |
| O98.9 Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperium | ||||
| O98.91 Unspecified maternal infectious and parasitic disease complicating pregnancy | ||||
| O98.911 | Unspecified maternal infectious and parasitic disease complicating pregnancy, first trimesterCMS: Unsp maternal infec/parastc disease comp preg, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.912 | Unspecified maternal infectious and parasitic disease complicating pregnancy, second trimesterCMS: Unsp maternal infec/parastc disease comp preg, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.913 | Unspecified maternal infectious and parasitic disease complicating pregnancy, third trimesterCMS: Unsp maternal infec/parastc disease comp preg, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.919 | Unspecified maternal infectious and parasitic disease complicating pregnancy, unspecified trimesterCMS: Unsp maternal infec/parastc disease comp preg, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.92 | Unspecified maternal infectious and parasitic disease complicating childbirthCMS: Unsp maternal infec/parastc disease complicating childbirth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O98.93 | Unspecified maternal infectious and parasitic disease complicating the puerperiumCMS: Unsp maternal infec/parastc disease comp the puerperium | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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