Valid for Submission
I15.9 is a billable diagnosis code used to specify a medical diagnosis of secondary hypertension, unspecified. The code I15.9 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code I15.9 might also be used to specify conditions or terms like diastolic hypertension, hypertensive emergency, malignant hypertension, malignant secondary hypertension, paroxysmal hypertension , perioperative hypertension, etc.
Unspecified diagnosis codes like I15.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I15.9 are found in the index:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Diastolic hypertension
- Hypertensive emergency
- Malignant hypertension
- Malignant secondary hypertension
- Paroxysmal hypertension
- Perioperative hypertension
- Pre-existing secondary hypertension complicating pregnancy, childbirth and puerperium
- Secondary diastolic hypertension
- Secondary hypertension
Diagnostic Related Groups - MS-DRG Mapping
Convert I15.9 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code I15.9 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
High Blood Pressure
What is blood pressure?
Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls. This is called diastolic pressure.
Your blood pressure reading uses these two numbers. Usually the systolic number comes before or above the diastolic number. For example, 120/80 means a systolic of 120 and a diastolic of 80.
How is high blood pressure diagnosed?
High blood pressure usually has no symptoms. So the only way to find out if you have it is to get regular blood pressure checks from your health care provider. Your provider will use a gauge, a stethoscope or electronic sensor, and a blood pressure cuff. He or she will take two or more readings at separate appointments before making a diagnosis.
|Blood Pressure Category||Systolic Blood Pressure||Diastolic Blood Pressure|
|Normal||Less than 120||and||Less than 80|
|High Blood Pressure (no other heart risk factors)||140 or higher||or||90 or higher|
|High Blood Pressure (with other heart risk factors, according to some providers)||130 or higher||or||80 or higher|
|Dangerously high blood pressure - seek medical care right away||180 or higher||and||120 or higher|
For children and teens, the health care provider compares the blood pressure reading to what is normal for other kids who are the same age, height, and sex.
What are the different types of high blood pressure?
There are two main types of high blood pressure: primary and secondary high blood pressure.
- Primary, or essential, high blood pressure is the most common type of high blood pressure. For most people who get this kind of blood pressure, it develops over time as you get older.
- Secondary high blood pressure is caused by another medical condition or use of certain medicines. It usually gets better after you treat that condition or stop taking the medicines that are causing it.
Why do I need to worry about high blood pressure?
When your blood pressure stays high over time, it causes the heart to pump harder and work overtime, possibly leading to serious health problems such as heart attack, stroke, heart failure, and kidney failure.
What are the treatments for high blood pressure?
Treatments for high blood pressure include heart-healthy lifestyle changes and medicines.
You will work with your provider to come up with a treatment plan. It may include only the lifestyle changes. These changes, such as heart-healthy eating and exercise, can be very effective. But sometimes the changes do not control or lower your high blood pressure. Then you may need to take medicine. There are different types of blood pressure medicines. Some people need to take more than one type.
If your high blood pressure is caused by another medical condition or medicine, treating that condition or stopping the medicine may lower your blood pressure.
NIH: National Heart, Lung, and Blood Institute
[Learn More in MedlinePlus]