ICD-10 · PDGM grouping
O26 Maternal care for other conditions predominantly related to pregnancy
All 72 codes in the O26 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
72
Can lead a claim
51
Cannot lead a claim
21
What CMS assigns to O26
51 of the 72 codes group to MMTA - Other; 21 are assigned no clinical group. None of the 72 is assigned a comorbidity subgroup. 51 of the 72 can lead a claim.
Every code in O26
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 |
|---|---|---|---|---|
| O26.0 Excessive weight gain in pregnancy | ||||
| O26.00 | Excessive weight gain in pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.01 | Excessive weight gain in pregnancy, first trimester | Can lead a claim | A | None |
| O26.02 | Excessive weight gain in pregnancy, second trimester | Can lead a claim | A | None |
| O26.03 | Excessive weight gain in pregnancy, third trimester | Can lead a claim | A | None |
| O26.1 Low weight gain in pregnancy | ||||
| O26.10 | Low weight gain in pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.11 | Low weight gain in pregnancy, first trimester | Can lead a claim | A | None |
| O26.12 | Low weight gain in pregnancy, second trimester | Can lead a claim | A | None |
| O26.13 | Low weight gain in pregnancy, third trimester | Can lead a claim | A | None |
| O26.2 Pregnancy care for patient with recurrent pregnancy loss | ||||
| O26.20 | Pregnancy care for patient with recurrent pregnancy loss, unspecified trimesterCMS: Preg care for patient w recurrent preg loss, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.21 | Pregnancy care for patient with recurrent pregnancy loss, first trimesterCMS: Preg care for patient w recurrent preg loss, first trimester | Can lead a claim | A | None |
| O26.22 | Pregnancy care for patient with recurrent pregnancy loss, second trimesterCMS: Preg care for patient w recur preg loss, second trimester | Can lead a claim | A | None |
| O26.23 | Pregnancy care for patient with recurrent pregnancy loss, third trimesterCMS: Preg care for patient w recurrent preg loss, third trimester | Can lead a claim | A | None |
| O26.3 Retained intrauterine contraceptive device in pregnancy | ||||
| O26.30 | Retained intrauterine contraceptive device in pregnancy, unspecified trimesterCMS: Retained uterin contracep dev in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.31 | Retained intrauterine contraceptive device in pregnancy, first trimesterCMS: Retained uterin contracep dev in pregnancy, first trimester | Can lead a claim | A | None |
| O26.32 | Retained intrauterine contraceptive device in pregnancy, second trimesterCMS: Retained uterin contracep dev in pregnancy, second trimester | Can lead a claim | A | None |
| O26.33 | Retained intrauterine contraceptive device in pregnancy, third trimesterCMS: Retained uterin contracep dev in pregnancy, third trimester | Can lead a claim | A | None |
| O26.4 Herpes gestationis | ||||
| O26.40 | Herpes gestationis, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.41 | Herpes gestationis, first trimester | Can lead a claim | A | None |
| O26.42 | Herpes gestationis, second trimester | Can lead a claim | A | None |
| O26.43 | Herpes gestationis, third trimester | Can lead a claim | A | None |
| O26.5 Maternal hypotension syndrome | ||||
| O26.50 | Maternal hypotension syndrome, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.51 | Maternal hypotension syndrome, first trimester | Can lead a claim | A | None |
| O26.52 | Maternal hypotension syndrome, second trimester | Can lead a claim | A | None |
| O26.53 | Maternal hypotension syndrome, third trimester | Can lead a claim | A | None |
| O26.6 Liver and biliary tract disorders in pregnancy, childbirth and the puerperium | ||||
| O26.61 Liver and biliary tract disorders in pregnancy | ||||
| O26.611 | Liver and biliary tract disorders in pregnancy, first trimesterCMS: Liver and biliary tract disord in pregnancy, first trimester | Can lead a claim | A | None |
| O26.612 | Liver and biliary tract disorders in pregnancy, second trimesterCMS: Liver and biliary tract disord in preg, second trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.613 | Liver and biliary tract disorders in pregnancy, third trimesterCMS: Liver and biliary tract disord in pregnancy, third trimester | Can lead a claim | A | None |
| O26.619 | Liver and biliary tract disorders in pregnancy, unspecified trimesterCMS: Liver and biliary tract disord in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.62 | Liver and biliary tract disorders in childbirth | Can lead a claim | A | None |
| O26.63 | Liver and biliary tract disorders in the puerperium | Can lead a claim | A | None |
| O26.64 Intrahepatic cholestasis of pregnancy | ||||
| O26.641 | Intrahepatic cholestasis of pregnancy, first trimester | Can lead a claim | A | None |
| O26.642 | Intrahepatic cholestasis of pregnancy, second trimester | Can lead a claim | A | None |
| O26.643 | Intrahepatic cholestasis of pregnancy, third trimester | Can lead a claim | A | None |
| O26.649 | Intrahepatic cholestasis of pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.7 Subluxation of symphysis (pubis) in pregnancy, childbirth and the puerperium | ||||
| O26.71 Subluxation of symphysis (pubis) in pregnancy | ||||
| O26.711 | Subluxation of symphysis (pubis) in pregnancy, first trimesterCMS: Sublux of symphysis (pubis) in pregnancy, first trimester | Can lead a claim | A | None |
| O26.712 | Subluxation of symphysis (pubis) in pregnancy, second trimesterCMS: Sublux of symphysis (pubis) in pregnancy, second trimester | Can lead a claim | A | None |
| O26.713 | Subluxation of symphysis (pubis) in pregnancy, third trimesterCMS: Sublux of symphysis (pubis) in pregnancy, third trimester | Can lead a claim | A | None |
| O26.719 | Subluxation of symphysis (pubis) in pregnancy, unspecified trimesterCMS: Sublux of symphysis (pubis) in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.72 | Subluxation of symphysis (pubis) in childbirth | Can lead a claim | A | None |
| O26.73 | Subluxation of symphysis (pubis) in the puerperium | Can lead a claim | A | None |
| O26.8 Other specified pregnancy related conditions | ||||
| O26.81 Pregnancy related exhaustion and fatigue | ||||
| O26.811 | Pregnancy related exhaustion and fatigue, first trimester | Can lead a claim | A | None |
| O26.812 | Pregnancy related exhaustion and fatigue, second trimester | Can lead a claim | A | None |
| O26.813 | Pregnancy related exhaustion and fatigue, third trimester | Can lead a claim | A | None |
| O26.819 | Pregnancy related exhaustion and fatigue, unspecified trimesterCMS: Pregnancy related exhaustion and fatigue, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.82 Pregnancy related peripheral neuritis | ||||
| O26.821 | Pregnancy related peripheral neuritis, first trimester | Can lead a claim | A | None |
| O26.822 | Pregnancy related peripheral neuritis, second trimester | Can lead a claim | A | None |
| O26.823 | Pregnancy related peripheral neuritis, third trimester | Can lead a claim | A | None |
| O26.829 | Pregnancy related peripheral neuritis, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.83 Pregnancy related renal disease | ||||
| O26.831 | Pregnancy related renal disease, first trimester | Can lead a claim | A | None |
| O26.832 | Pregnancy related renal disease, second trimester | Can lead a claim | A | None |
| O26.833 | Pregnancy related renal disease, third trimester | Can lead a claim | A | None |
| O26.839 | Pregnancy related renal disease, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.84 Uterine size-date discrepancy complicating pregnancy | ||||
| O26.841 | Uterine size-date discrepancy, first trimester | Can lead a claim | A | None |
| O26.842 | Uterine size-date discrepancy, second trimester | Can lead a claim | A | None |
| O26.843 | Uterine size-date discrepancy, third trimester | Can lead a claim | A | None |
| O26.849 | Uterine size-date discrepancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.85 Spotting complicating pregnancy | ||||
| O26.851 | Spotting complicating pregnancy, first trimester | Can lead a claim | A | None |
| O26.852 | Spotting complicating pregnancy, second trimester | Can lead a claim | A | None |
| O26.853 | Spotting complicating pregnancy, third trimester | Can lead a claim | A | None |
| O26.859 | Spotting complicating pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.86 | Pruritic urticarial papules and plaques of pregnancy (PUPPP) | Can lead a claim | A | None |
| O26.87 Cervical shortening | ||||
| O26.872 | Cervical shortening, second trimester | Can lead a claim | A | None |
| O26.873 | Cervical shortening, third trimester | Can lead a claim | A | None |
| O26.879 | Cervical shortening, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.89 Other specified pregnancy related conditions | ||||
| O26.891 | Other specified pregnancy related conditions, first trimesterCMS: Oth pregnancy related conditions, first trimester | Can lead a claim | A | None |
| O26.892 | Other specified pregnancy related conditions, second trimesterCMS: Oth pregnancy related conditions, second trimester | Can lead a claim | A | None |
| O26.893 | Other specified pregnancy related conditions, third trimesterCMS: Oth pregnancy related conditions, third trimester | Can lead a claim | A | None |
| O26.899 | Other specified pregnancy related conditions, unspecified trimesterCMS: Oth pregnancy related conditions, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.9 Pregnancy related conditions, unspecified | ||||
| O26.90 | Pregnancy related conditions, unspecified, unspecified trimesterCMS: Pregnancy related conditions, unsp, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.91 | Pregnancy related conditions, unspecified, first trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.92 | Pregnancy related conditions, unspecified, second trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O26.93 | Pregnancy related conditions, unspecified, third trimester | 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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