ICD Code I15.9

ICD code I15.9 is secondary hypertension, unspecified, meaning high blood pressure caused by another medical condition, but the exact cause is not specified.

1. Elevated blood pressure readings on multiple occasions.

2. Evidence or suspicion of an underlying, identifiable cause for hypertension (e.g., renal disease, endocrine disorders, vascular abnormalities).

3. Absence of documentation specifying the exact secondary cause of hypertension.

4. No clear indication that hypertension is primary (essential) in nature.

5. Patient history, physical examination, or laboratory findings suggest secondary hypertension, but the specific etiology remains undetermined or unspecified in the medical record.

6. Symptoms may include headache, visual disturbances, chest pain, or signs related to the underlying secondary cause, though these are not always present.

Relevant CPT codes that may be used to treat ICD code I15.9 include:

- 99202–99215 (Office or other outpatient evaluation and management services)

- 93784 (Ambulatory blood pressure monitoring, 24 hours)

- 93000 (Electrocardiogram, routine ECG with at least 12 leads; with interpretation and report)

- 36415 (Collection of venous blood by venipuncture)

- 80050 (General health panel)

- 80061 (Lipid panel)

- 82565 (Creatinine; blood)

- 84443 (Thyroid stimulating hormone (TSH))

- 81001–81003 (Urinalysis)

- 96372 (Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular)

These CPT codes are commonly associated with the management and evaluation of patients with ICD code I15.9. Always verify payer-specific requirements and clinical documentation.

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