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ICD-10-CM block

Hypertensive diseases (I10-I1A)

Chapter 9: Diseases of the circulatory system

Categories in I10-I1A

I10 Essential (primary) hypertension

Billable as is.

I11 Hypertensive heart disease

I12 Hypertensive chronic kidney disease

I13 Hypertensive heart and chronic kidney disease

I15 Secondary hypertension

I16 Hypertensive crisis

I1A Other hypertension

Notes for the whole block

Excludes1 Not coded here: never report these together with this code (use the code given instead).

  • neonatal hypertension (P29.2)
  • primary pulmonary hypertension (I27.0)

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Use additional code Add a second code for the detail named here.

  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

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ICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.

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