I15.2

Billable

Hypertension secondary to endocrine disorders

HCC Category Mapping

RxHCCHCC 187 — Hypertension

0.000

What This Code Means

High blood pressure caused by hormonal disorders such as thyroid disease, adrenal gland disorders, or pituitary gland problems.

Coding Tips

•I15.2 requires documentation of both hypertension and the specific endocrine disorder causing it (e.g., hyperthyroidism, Cushing's syndrome)
•Document the causal relationship between the endocrine condition and the hypertension to justify this secondary hypertension code

Clinical Significance

Hypertension secondary to endocrine disorders results from hormonal imbalances such as primary aldosteronism (Conn syndrome), pheochromocytoma, Cushing syndrome, hyperthyroidism, or hyperparathyroidism. Identifying the endocrine etiology is important because treatment of the underlying hormonal disorder may cure or significantly improve the hypertension.

Documentation Requirements

✓Provider documentation explicitly stating hypertension is secondary to an endocrine disorder
✓Identification of the specific endocrine disorder causing hypertension
✓Relevant hormonal laboratory testing (aldosterone, cortisol, catecholamines, thyroid function, etc.)
✓Blood pressure readings
✓Additional code for the underlying endocrine condition
✓Current treatment plan addressing both the endocrine disorder and hypertension

Commonly Confused Codes

I10 — Essential hypertension (use when no secondary endocrine cause is identified)I15.0 — Renovascular hypertension (different underlying etiology — vascular, not endocrine)I15.1 — Hypertension secondary to renal disorders (different underlying etiology — renal, not endocrine)I15.8 — Other secondary hypertension (use for secondary causes not classified under I15.0-I15.2)E24.x — Cushing syndrome (underlying endocrine condition that should be coded additionally)

Code Hierarchy

└I15Secondary hypertension └I15.2Hypertension secondary to endocrine disorders

└I15.2Hypertension secondary to endocrine disorders