Hypertension ICD-10-CM Code Reporting Table
November 25th, 2019 - Wyn Staheli, Director of ResearchCategories: Diagnosis Coding Anesthesia|Pain Management Neurology|Neurosurgery Obstetrics|Gynecology Ophthalmology Optometry Oral and Maxillofacial Surgery
When high blood pressure occurs without a known cause or in relation to another medical condition (e.g., chronic kidney disease) it is known as essential or primary hypertension. Sometimes there are no symptoms. Over time, the long-term force of blood against artery and vessel walls can cause a variety of health problems. In ICD-10-CM, hypertension code options do not distinguish between malignant and benign or between controlled and uncontrolled as they did in ICD-9-CM. What is important for code selection is knowing if the hypertension is caused by or related to another condition. The following helpful table shows some of these options.
Note: See Section 1;C.9.a of the ICD-10-CM Official Guidelines for Coding & Reporting for further guidance.
| Condition(s) | Coding Guidance |
| Essential (primary) | I10 if there are no associated causal relationships (e.g., heart disease) |
| w/ cardiorenal disease | I13.-: this combination code includes hypertension, heart disease, and CKD.
Note: If there is acute renal failure, add that code. |
| w/ chronic kidney disease | Patient has CKD classifiable with N18.-
|
| w/ eye involvement | Report a code from subcategory H35.0- and a code from I10-I15. Sequence according to the reason for the encounter. |
| w/ heart disease | Patient has heart condition classified with I50.- or I51.4-I51.9
|
| w/ kidney involvement | Hypertensive renal disease NOS or CKD stages 1-4 use code I12.9. Otherwise,see cardiorenal disease codes. Note: If there is also heart involvement, use cardiorenal codes instead. |
| w/ pregnancy |
|
| w/ pulmonary involvement | |
| cerebrovascular disease | Code first applicable code from categories I60-I69, then report applicable hypertension code. |
| hypertensive crisis | Blood pressure is 180/120 or greater. Use code from I16.-
|
| secondary | Secondary: Hypertension is due to underlying condition not otherwise classified. Two codes are required: one to identify the underlying etiology and one from category I15- to identify the hypertension. Sequence according to reason for the encounter. |
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