I15 Secondary hypertension

Category / Non-billable header 5 subcodes

Block: Hypertensive diseases (I10-I1A)

Excludes 1 (cannot be coded together)

  • postprocedural hypertension (I97.3)

Excludes 2 (not included here)

  • secondary hypertension involving vessels of brain (I60-I69)
  • secondary hypertension involving vessels of eye (H35.0-)

Code Also

  • underlying condition

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
I15..0 Renovascular hypertension Yes
I15..1 Hypertension secondary to other renal disorders Yes
I15..2 Hypertension secondary to endocrine disorders Yes
I15..8 Other secondary hypertension Yes
I15..9 Secondary hypertension, unspecified Yes

Last reviewed: September 2026