ICD-10-CM Section · O10-O16
Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
125 codes in this section
125
Total Codes
98
Billable
27
Header (Non-Billable)
7
Top-Level Codes
About Section O10-O16
Section O10-O16 (O10-O16) covers edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium. It sits within the Pregnancy, childbirth and the puerperium chapter (O00-O9A). This section contains 125 ICD-10-CM codes, 98 billable diagnoses you can submit on a claim, and 27 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in O10-O16
Grouped by 3-character root code. Click any code for full detail.
O10
Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
48 subcodes
| O10.0 | Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium | Header |
| O10.01 | Pre-existing essential hypertension complicating pregnancy | Header |
| O10.011 | Pre-existing essential hypertension complicating pregnancy, first trimester | Billable |
| O10.012 | Pre-existing essential hypertension complicating pregnancy, second trimester | Billable |
| O10.013 | Pre-existing essential hypertension complicating pregnancy, third trimester | Billable |
| O10.019 | Pre-existing essential hypertension complicating pregnancy, unspecified trimester | Billable |
| O10.02 | Pre-existing essential hypertension complicating childbirth | Billable |
| O10.03 | Pre-existing essential hypertension complicating the puerperium | Billable |
| O10.1 | Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium | Header |
| O10.11 | Pre-existing hypertensive heart disease complicating pregnancy | Header |
| O10.111 | Pre-existing hypertensive heart disease complicating pregnancy, first trimester | Billable |
| O10.112 | Pre-existing hypertensive heart disease complicating pregnancy, second trimester | Billable |
| O10.113 | Pre-existing hypertensive heart disease complicating pregnancy, third trimester | Billable |
| O10.119 | Pre-existing hypertensive heart disease complicating pregnancy, unspecified trimester | Billable |
| O10.12 | Pre-existing hypertensive heart disease complicating childbirth | Billable |
| O10.13 | Pre-existing hypertensive heart disease complicating the puerperium | Billable |
| O10.2 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperium | Header |
| O10.21 | Pre-existing hypertensive chronic kidney disease complicating pregnancy | Header |
| O10.211 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, first trimester | Billable |
| O10.212 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, second trimester | Billable |
| O10.213 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, third trimester | Billable |
| O10.219 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, unspecified trimester | Billable |
| O10.22 | Pre-existing hypertensive chronic kidney disease complicating childbirth | Billable |
| O10.23 | Pre-existing hypertensive chronic kidney disease complicating the puerperium | Billable |
| O10.3 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperium | Header |
| O10.31 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy | Header |
| O10.311 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, first trimester | Billable |
| O10.312 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, second trimester | Billable |
| O10.313 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, third trimester | Billable |
| O10.319 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimester | Billable |
| O10.32 | Pre-existing hypertensive heart and chronic kidney disease complicating childbirth | Billable |
| O10.33 | Pre-existing hypertensive heart and chronic kidney disease complicating the puerperium | Billable |
| O10.4 | Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium | Header |
| O10.41 | Pre-existing secondary hypertension complicating pregnancy | Header |
| O10.411 | Pre-existing secondary hypertension complicating pregnancy, first trimester | Billable |
| O10.412 | Pre-existing secondary hypertension complicating pregnancy, second trimester | Billable |
| O10.413 | Pre-existing secondary hypertension complicating pregnancy, third trimester | Billable |
| O10.419 | Pre-existing secondary hypertension complicating pregnancy, unspecified trimester | Billable |
| O10.42 | Pre-existing secondary hypertension complicating childbirth | Billable |
| O10.43 | Pre-existing secondary hypertension complicating the puerperium | Billable |
| O10.9 | Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium | Header |
| O10.91 | Unspecified pre-existing hypertension complicating pregnancy | Header |
| O10.911 | Unspecified pre-existing hypertension complicating pregnancy, first trimester | Billable |
| O10.912 | Unspecified pre-existing hypertension complicating pregnancy, second trimester | Billable |
| O10.913 | Unspecified pre-existing hypertension complicating pregnancy, third trimester | Billable |
| O10.919 | Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester | Billable |
| O10.92 | Unspecified pre-existing hypertension complicating childbirth | Billable |
| O10.93 | Unspecified pre-existing hypertension complicating the puerperium | Billable |
O11
Pre-existing hypertension with pre-eclampsia
6 subcodes
| O11.1 | Pre-existing hypertension with pre-eclampsia, first trimester | Billable |
| O11.2 | Pre-existing hypertension with pre-eclampsia, second trimester | Billable |
| O11.3 | Pre-existing hypertension with pre-eclampsia, third trimester | Billable |
| O11.4 | Pre-existing hypertension with pre-eclampsia, complicating childbirth | Billable |
| O11.5 | Pre-existing hypertension with pre-eclampsia, complicating the puerperium | Billable |
| O11.9 | Pre-existing hypertension with pre-eclampsia, unspecified trimester | Billable |
O12
Gestational [pregnancy-induced] edema and proteinuria without hypertension
21 subcodes
| O12.0 | Gestational edema | Header |
| O12.00 | Gestational edema, unspecified trimester | Billable |
| O12.01 | Gestational edema, first trimester | Billable |
| O12.02 | Gestational edema, second trimester | Billable |
| O12.03 | Gestational edema, third trimester | Billable |
| O12.04 | Gestational edema, complicating childbirth | Billable |
| O12.05 | Gestational edema, complicating the puerperium | Billable |
| O12.1 | Gestational proteinuria | Header |
| O12.10 | Gestational proteinuria, unspecified trimester | Billable |
| O12.11 | Gestational proteinuria, first trimester | Billable |
| O12.12 | Gestational proteinuria, second trimester | Billable |
| O12.13 | Gestational proteinuria, third trimester | Billable |
| O12.14 | Gestational proteinuria, complicating childbirth | Billable |
| O12.15 | Gestational proteinuria, complicating the puerperium | Billable |
| O12.2 | Gestational edema with proteinuria | Header |
| O12.20 | Gestational edema with proteinuria, unspecified trimester | Billable |
| O12.21 | Gestational edema with proteinuria, first trimester | Billable |
| O12.22 | Gestational edema with proteinuria, second trimester | Billable |
| O12.23 | Gestational edema with proteinuria, third trimester | Billable |
| O12.24 | Gestational edema with proteinuria, complicating childbirth | Billable |
| O12.25 | Gestational edema with proteinuria, complicating the puerperium | Billable |
O13
Gestational [pregnancy-induced] hypertension without significant proteinuria
6 subcodes
| O13.1 | Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester | Billable |
| O13.2 | Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester | Billable |
| O13.3 | Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester | Billable |
| O13.4 | Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth | Billable |
| O13.5 | Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium | Billable |
| O13.9 | Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester | Billable |
O14
Pre-eclampsia
24 subcodes
| O14.0 | Mild to moderate pre-eclampsia | Header |
| O14.00 | Mild to moderate pre-eclampsia, unspecified trimester | Billable |
| O14.02 | Mild to moderate pre-eclampsia, second trimester | Billable |
| O14.03 | Mild to moderate pre-eclampsia, third trimester | Billable |
| O14.04 | Mild to moderate pre-eclampsia, complicating childbirth | Billable |
| O14.05 | Mild to moderate pre-eclampsia, complicating the puerperium | Billable |
| O14.1 | Severe pre-eclampsia | Header |
| O14.10 | Severe pre-eclampsia, unspecified trimester | Billable |
| O14.12 | Severe pre-eclampsia, second trimester | Billable |
| O14.13 | Severe pre-eclampsia, third trimester | Billable |
| O14.14 | Severe pre-eclampsia complicating childbirth | Billable |
| O14.15 | Severe pre-eclampsia, complicating the puerperium | Billable |
| O14.2 | HELLP syndrome | Header |
| O14.20 | HELLP syndrome (HELLP), unspecified trimester | Billable |
| O14.22 | HELLP syndrome (HELLP), second trimester | Billable |
| O14.23 | HELLP syndrome (HELLP), third trimester | Billable |
| O14.24 | HELLP syndrome, complicating childbirth | Billable |
| O14.25 | HELLP syndrome, complicating the puerperium | Billable |
| O14.9 | Unspecified pre-eclampsia | Header |
| O14.90 | Unspecified pre-eclampsia, unspecified trimester | Billable |
| O14.92 | Unspecified pre-eclampsia, second trimester | Billable |
| O14.93 | Unspecified pre-eclampsia, third trimester | Billable |
| O14.94 | Unspecified pre-eclampsia, complicating childbirth | Billable |
| O14.95 | Unspecified pre-eclampsia, complicating the puerperium | Billable |
O15
Eclampsia
7 subcodes
| O15.0 | Eclampsia complicating pregnancy | Header |
| O15.00 | Eclampsia complicating pregnancy, unspecified trimester | Billable |
| O15.02 | Eclampsia complicating pregnancy, second trimester | Billable |
| O15.03 | Eclampsia complicating pregnancy, third trimester | Billable |
| O15.1 | Eclampsia complicating labor | Billable |
| O15.2 | Eclampsia complicating the puerperium | Billable |
| O15.9 | Eclampsia, unspecified as to time period | Billable |
O16
Unspecified maternal hypertension
6 subcodes
| O16.1 | Unspecified maternal hypertension, first trimester | Billable |
| O16.2 | Unspecified maternal hypertension, second trimester | Billable |
| O16.3 | Unspecified maternal hypertension, third trimester | Billable |
| O16.4 | Unspecified maternal hypertension, complicating childbirth | Billable |
| O16.5 | Unspecified maternal hypertension, complicating the puerperium | Billable |
| O16.9 | Unspecified maternal hypertension, unspecified trimester | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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