I1A
Non-billableOther hypertension
Other 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
Use Additional Code
Additional codes that should follow this code
Child Codes (1)
Related Conditions
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for other hypertension?
The ICD-10-CM code for other hypertension is I1A. The full clinical description is "Other hypertension". I1A is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code I1A mean?
ICD-10-CM code I1A represents “Other 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 I1A a billable code?
No, I1A is a non-billable header code. You need to use one of its more specific child codes for billing. There are 1 child codes under I1A.
What chapter is I1A in?
I1A is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I1A?
I1A has Excludes1 notes indicating codes that cannot be used together with it, including: neonatal hypertension (P29.2); primary pulmonary hypertension (I27.0).
What are the subcategories under I1A?
I1A has 1 child code, including: I1A.0 (Resistant hypertension).
Are additional codes required with I1A?
Yes, when using I1A, 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 I1A?
I1A is linked to 1 UMLS Concept Unique Identifier: C5819180. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I1A relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other 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 I1A?
There is no direct ICD-11 mapping available for I1A in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.