O11
Non-billablePre-existing hypertension with pre-eclampsia
Pre-existing hypertension with pre-eclampsia
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- •conditions in complicated by pre-eclampsiaO10
- pre-eclampsia superimposed pre-existing hypertension
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
- •code from to identify the type of hypertensionO10
Child Codes (6)
O11.1Pre-existing hypertension w pre-eclampsia, first trimester
O11.2Pre-existing hypertension w pre-eclampsia, second trimester
O11.3Pre-existing hypertension w pre-eclampsia, third trimester
O11.4Pre-existing htn with pre-eclampsia, comp childbirth
O11.5Pre-existing htn with pre-eclampsia, comp the puerperium
O11.9Pre-existing hypertension with pre-eclampsia, unsp trimester
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(5)
UMLS
- Pre-eclampsia or eclampsia with pre-existing hypertensionC0341952
- Pre-eclampsia or eclampsia with pre-existing hypertension (disorder)C0341952
- Pre-existing hypertension with pre-eclampsiaC0341952
- conditions in O10 complicated by pre-eclampsiaC5819589
- pre-eclampsia superimposed pre-existing hypertensionC4290245
Frequently Asked Questions
What is the ICD-10 code for pre-existing hypertension with pre-eclampsia?
The ICD-10-CM code for pre-existing hypertension with pre-eclampsia is O11. The full clinical description is "Pre-existing hypertension with pre-eclampsia". O11 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code O11 mean?
ICD-10-CM code O11 represents “Pre-existing hypertension with pre-eclampsia”. It is classified under Chapter 15: Pregnancy, Childbirth and the Puerperium and is a non-billable header code. Use a more specific child code for billing purposes.
Is O11 a billable code?
No, O11 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under O11.
What chapter is O11 in?
O11 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).
What codes cannot be used with O11?
O11 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-).
What are the subcategories under O11?
O11 has 6 child codes, including: O11.1 (Pre-existing hypertension w pre-eclampsia, first trimester), O11.2 (Pre-existing hypertension w pre-eclampsia, second trimester), O11.3 (Pre-existing hypertension w pre-eclampsia, third trimester), O11.4 (Pre-existing htn with pre-eclampsia, comp childbirth), and 2 more.
Are additional codes required with O11?
Yes, when using O11, also report: code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.; code from O10 to identify the type of hypertension.
What are the UMLS CUIs for O11?
O11 is linked to 3 UMLS Concept Unique Identifiers: C0341952, C5819589, C4290245. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does O11 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like pre-existing hypertension with pre-eclampsia affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of O11?
O11 maps to the ICD-11 code: JA21 (Pre-eclampsia superimposed on chronic hypertension).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.