October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

O09 Supervision of high risk pregnancy

All 64 codes in the O09 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

64

Can lead a claim

45

Cannot lead a claim

19

What CMS assigns to O09

45 of the 64 codes group to MMTA - Other; 19 are assigned no clinical group. None of the 64 is assigned a comorbidity subgroup. 45 of the 64 can lead a claim.

Every code in O09

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
O09.0 Supervision of pregnancy with history of infertility
O09.00Supervision of pregnancy with history of infertility, unspecified trimesterCMS: Suprvsn of preg w history of infertility, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.01Supervision of pregnancy with history of infertility, first trimesterCMS: Suprvsn of preg w history of infertility, first trimesterCan lead a claimANone
O09.02Supervision of pregnancy with history of infertility, second trimesterCMS: Suprvsn of preg w history of infertility, second trimesterCan lead a claimANone
O09.03Supervision of pregnancy with history of infertility, third trimesterCMS: Suprvsn of preg w history of infertility, third trimesterCan lead a claimANone
O09.1 Supervision of pregnancy with history of ectopic pregnancy
O09.10Supervision of pregnancy with history of ectopic pregnancy, unspecified trimesterCMS: Suprvsn of preg with history of ectopic preg, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.11Supervision of pregnancy with history of ectopic pregnancy, first trimesterCMS: Suprvsn of preg with history of ectopic preg, first triCan lead a claimANone
O09.12Supervision of pregnancy with history of ectopic pregnancy, second trimesterCMS: Suprvsn of preg with history of ectopic preg, second triCan lead a claimANone
O09.13Supervision of pregnancy with history of ectopic pregnancy, third trimesterCMS: Suprvsn of preg with history of ectopic preg, third triCan lead a claimANone
O09.A Supervision of pregnancy with history of molar pregnancy
O09.A0Supervision of pregnancy with history of molar pregnancy, unspecified trimesterCMS: Suprvsn of preg with history of molar preg, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.A1Supervision of pregnancy with history of molar pregnancy, first trimesterCMS: Suprvsn of preg with history of molar preg, first trimesterCan lead a claimANone
O09.A2Supervision of pregnancy with history of molar pregnancy, second trimesterCMS: Suprvsn of preg with history of molar preg, second trimesterCan lead a claimANone
O09.A3Supervision of pregnancy with history of molar pregnancy, third trimesterCMS: Suprvsn of preg with history of molar preg, third trimesterCan lead a claimANone
O09.2 Supervision of pregnancy with other poor reproductive or obstetric history
O09.21 Supervision of pregnancy with history of pre-term labor
O09.211Supervision of pregnancy with history of pre-term labor, first trimesterCMS: Suprvsn of preg w history of pre-term labor, first trimesterCan lead a claimANone
O09.212Supervision of pregnancy with history of pre-term labor, second trimesterCMS: Suprvsn of preg w history of pre-term labor, second triCan lead a claimANone
O09.213Supervision of pregnancy with history of pre-term labor, third trimesterCMS: Suprvsn of preg w history of pre-term labor, third trimesterCan lead a claimANone
O09.219Supervision of pregnancy with history of pre-term labor, unspecified trimesterCMS: Suprvsn of preg w history of pre-term labor, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.29 Supervision of pregnancy with other poor reproductive or obstetric history
O09.291Supervision of pregnancy with other poor reproductive or obstetric history, first trimesterCMS: Suprvsn of preg w poor reprodctv or obstet hx, first triCan lead a claimANone
O09.292Supervision of pregnancy with other poor reproductive or obstetric history, second trimesterCMS: Suprvsn of preg w poor reprodctv or obstet hx, second triCan lead a claimANone
O09.293Supervision of pregnancy with other poor reproductive or obstetric history, third trimesterCMS: Suprvsn of preg w poor reprodctv or obstet hx, third triCan lead a claimANone
O09.299Supervision of pregnancy with other poor reproductive or obstetric history, unspecified trimesterCMS: Suprvsn of preg w poor reprodctv or obstet history, unsp triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.3 Supervision of pregnancy with insufficient antenatal care
O09.30Supervision of pregnancy with insufficient antenatal care, unspecified trimesterCMS: Suprvsn of preg w insufficient antenat care, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.31Supervision of pregnancy with insufficient antenatal care, first trimesterCMS: Suprvsn of preg w insufficient antenat care, first trimesterCan lead a claimANone
O09.32Supervision of pregnancy with insufficient antenatal care, second trimesterCMS: Suprvsn of preg w insufficient antenat care, second triCan lead a claimANone
O09.33Supervision of pregnancy with insufficient antenatal care, third trimesterCMS: Suprvsn of preg w insufficient antenat care, third trimesterCan lead a claimANone
O09.4 Supervision of pregnancy with grand multiparity
O09.40Supervision of pregnancy with grand multiparity, unspecified trimesterCMS: Supervision of pregnancy w grand multiparity, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.41Supervision of pregnancy with grand multiparity, first trimesterCMS: Suprvsn of pregnancy w grand multiparity, first trimesterCan lead a claimANone
O09.42Supervision of pregnancy with grand multiparity, second trimesterCMS: Suprvsn of pregnancy w grand multiparity, second trimesterCan lead a claimANone
O09.43Supervision of pregnancy with grand multiparity, third trimesterCMS: Suprvsn of pregnancy w grand multiparity, third trimesterCan lead a claimANone
O09.5 Supervision of elderly primigravida and multigravida
O09.51 Supervision of elderly primigravida
O09.511Supervision of elderly primigravida, first trimesterCan lead a claimANone
O09.512Supervision of elderly primigravida, second trimesterCan lead a claimANone
O09.513Supervision of elderly primigravida, third trimesterCan lead a claimANone
O09.519Supervision of elderly primigravida, unspecified trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.52 Supervision of elderly multigravida
O09.521Supervision of elderly multigravida, first trimesterCan lead a claimANone
O09.522Supervision of elderly multigravida, second trimesterCan lead a claimANone
O09.523Supervision of elderly multigravida, third trimesterCan lead a claimANone
O09.529Supervision of elderly multigravida, unspecified trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.6 Supervision of young primigravida and multigravida
O09.61 Supervision of young primigravida
O09.611Supervision of young primigravida, first trimesterCan lead a claimANone
O09.612Supervision of young primigravida, second trimesterCan lead a claimANone
O09.613Supervision of young primigravida, third trimesterCan lead a claimANone
O09.619Supervision of young primigravida, unspecified trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.62 Supervision of young multigravida
O09.621Supervision of young multigravida, first trimesterCan lead a claimANone
O09.622Supervision of young multigravida, second trimesterCan lead a claimANone
O09.623Supervision of young multigravida, third trimesterCan lead a claimANone
O09.629Supervision of young multigravida, unspecified trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.7 Supervision of high risk pregnancy due to social problems
O09.70Supervision of high risk pregnancy due to social problems, unspecified trimesterCMS: Suprvsn of high risk preg due to social problems, unsp triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.71Supervision of high risk pregnancy due to social problems, first trimesterCMS: Suprvsn of high risk preg due to social problems, first triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.72Supervision of high risk pregnancy due to social problems, second trimesterCMS: Suprvsn of high risk preg due to social problems, second triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.73Supervision of high risk pregnancy due to social problems, third trimesterCMS: Suprvsn of high risk preg due to social problems, third triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.8 Supervision of other high risk pregnancies
O09.81 Supervision of pregnancy resulting from assisted reproductive technology
O09.811Supervision of pregnancy resulting from assisted reproductive technology, first trimesterCMS: Suprvsn of preg rslt from assisted reprodctv tech, first triCan lead a claimANone
O09.812Supervision of pregnancy resulting from assisted reproductive technology, second trimesterCMS: Suprvsn of preg rslt from assist reprodctv tech, second triCan lead a claimANone
O09.813Supervision of pregnancy resulting from assisted reproductive technology, third trimesterCMS: Suprvsn of preg rslt from assisted reprodctv tech, third triCan lead a claimANone
O09.819Supervision of pregnancy resulting from assisted reproductive technology, unspecified trimesterCMS: Suprvsn of preg rslt from assisted reprodctv tech, unsp triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.82 Supervision of pregnancy with history of in utero procedure during previous pregnancy
O09.821Supervision of pregnancy with history of in utero procedure during previous pregnancy, first trimesterCMS: Suprvsn of preg w hx of in utero proc dur prev preg, 1st triCan lead a claimANone
O09.822Supervision of pregnancy with history of in utero procedure during previous pregnancy, second trimesterCMS: Suprvsn of preg w hx of in utero proc dur prev preg, 2nd triCan lead a claimANone
O09.823Supervision of pregnancy with history of in utero procedure during previous pregnancy, third trimesterCMS: Suprvsn of preg w hx of in utero proc dur prev preg, 3rd triCan lead a claimANone
O09.829Supervision of pregnancy with history of in utero procedure during previous pregnancy, unspecified trimesterCMS: Suprvsn of preg w hx of in utero proc dur prev preg,unsp triCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.89 Supervision of other high risk pregnancies
O09.891Supervision of other high risk pregnancies, first trimesterCan lead a claimANone
O09.892Supervision of other high risk pregnancies, second trimesterCan lead a claimANone
O09.893Supervision of other high risk pregnancies, third trimesterCan lead a claimANone
O09.899Supervision of other high risk pregnancies, unspecified trimesterCMS: Supervision of other high risk pregnancies, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.9 Supervision of high risk pregnancy, unspecified
O09.90Supervision of high risk pregnancy, unspecified, unspecified trimesterCMS: Supervision of high risk pregnancy, unsp, unsp trimesterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
O09.91Supervision of high risk pregnancy, unspecified, first trimesterCMS: Supervision of high risk pregnancy, unsp, first trimesterCan lead a claimANone
O09.92Supervision of high risk pregnancy, unspecified, second trimesterCMS: Supervision of high risk pregnancy, unsp, second trimesterCan lead a claimANone
O09.93Supervision of high risk pregnancy, unspecified, third trimesterCMS: Supervision of high risk pregnancy, unsp, third trimesterCan lead a claimANone

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.

The monthly home health regs digest

What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue