I15
Non-billableSecondary hypertension
Secondary hypertension
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
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
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •transient cerebral ischemic attacks and related syndromesG45
- •hypertensive disease complicating pregnancy, childbirth and the puerperium,O10-O11, O13-O16
- •secondary hypertension involving vessels of brainI60-I69
- •secondary hypertension involving vessels of eyeH35.0
Use Additional Code
Additional codes that should follow this code
Code Also
A second code may be required; sequencing depends on circumstances
- underlying condition
Child Codes (5)
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
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Extracted Entities
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Also Known As / Clinical Terms(9)
UMLS
- Hypertension secondaryC0155616
- Secondary HypertensionC0155616
- Secondary hypertensionC0155616
- Secondary hypertension (disorder)C0155616
- Secondary hypertension NOSC0155616
- Secondary hypertension, unspecifiedC0155616
- Unspecified secondary hypertensionC0155616
- hypertension secondaryC0155616
- secondary hypertensionC0155616
Frequently Asked Questions
What is the ICD-10 code for secondary hypertension?
The ICD-10-CM code for secondary hypertension is I15. The full clinical description is "Secondary hypertension". I15 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code I15 mean?
ICD-10-CM code I15 represents “Secondary hypertension”. It is classified under Chapter 9: Diseases of the Circulatory System and is a non-billable header code. Use a more specific child code for billing purposes.
Is I15 a billable code?
No, I15 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under I15.
What chapter is I15 in?
I15 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I15?
I15 has Excludes1 notes indicating codes that cannot be used together with it, including: neonatal hypertension (P29.2); primary pulmonary hypertension (I27.0); postprocedural hypertension (I97.3).
What are the subcategories under I15?
I15 has 5 child codes, including: I15.0 (Renovascular hypertension), I15.1 (Hypertension secondary to other renal disorders), I15.2 (Hypertension secondary to endocrine disorders), I15.8 (Other secondary hypertension), and 1 more.
Are additional codes required with I15?
Yes, when using I15, also report: ; exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0).
What are the UMLS CUIs for I15?
I15 is linked to 1 UMLS Concept Unique Identifier: C0155616. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I15 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like secondary hypertension 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 I15?
I15 maps to the ICD-11 code: BA04.Z (Secondary hypertension, unspecified).
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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.