Pulmonary hypertension, unspecified

This code signifies elevated blood pressure within the pulmonary arteries, specifically when the underlying cause or type of pulmonary hypertension (PH) has not been determined or documented. It indicates a diagnosis of PH without further specification into Group 1 (Pulmonary Arterial Hypertension), Group 2 (due to left heart disease), Group 3 (due to lung disease and/or hypoxia), Group 4 (chronic thromboembolic PH), or Group 5 (PH with unclear multifactorial mechanisms).

This code is appropriate when the medical record clearly states a diagnosis of "pulmonary hypertension" but lacks any further detail regarding its etiology or classification. It should be used when the provider has not yet identified the specific type of PH, or when documentation is insufficient to assign a more specific code.

• Avoid using this code if the documentation provides any indication of the specific type or cause of pulmonary hypertension.
• Query the provider for clarification on the type of pulmonary hypertension whenever possible to allow for more specific coding.
• This code should be considered a temporary or placeholder code until a definitive diagnosis of the PH type is established.