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Pricing Sign in

I1A.0

Resistant hypertension

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
I10-I1Ablock
Excludes1
  • neonatal hypertension (P29.2)P29.2
  • primary pulmonary hypertension (I27.0)I27.0
Excludes2
  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)O10-O11O13-O16
I00-I99chapter
Excludes2
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
  • systemic connective tissue disorders (M30-M36)M30-M36
  • transient cerebral ischemic attacks and related syndromes (G45.-)G45.-

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 12
I1A.0code
Inclusion terms
  • Apparent treatment resistant hypertension
  • Treatment resistant hypertension
  • True resistant hypertension
Code first
  • specific type of existing hypertension, if known, such as:
  • essential hypertension (I10)I10I10
  • secondary hypertension (I15.-)I15.-I15.-
I10-I1Ablock
Use additional code
  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)Z77.22
  • history of tobacco dependence (Z87.891)Z87.891
  • occupational exposure to environmental tobacco smoke (Z57.31)Z57.31
  • tobacco dependence (F17.-)F17.-
  • tobacco use (Z72.0)Z72.0
Index entries leading here 1
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
    • resistant (apparent treatment) (treatment) (true) I1A.0
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

RX08HCC187

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
I1A
Block
I10-I1A

Present FY2024–FY2027.