I1A

Other hypertension

Non-billable header

I1A is a non-billable header code. Use one of the more specific codes below.

Excludes1

Not coded here — never report together with this code.

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

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)
  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Use additional code

Add a code to identify the following, if applicable.

  • 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)

More specific codes I1A

  • I1A.0Resistant hypertensionBillable

Related codes

  • I10Essential (primary) hypertensionBillable
  • I11Hypertensive heart diseaseHeader
  • I12Hypertensive chronic kidney diseaseHeader
  • I13Hypertensive heart and chronic kidney diseaseHeader
  • I15Secondary hypertensionHeader
  • I16Hypertensive crisisHeader

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