ICD-10-CM code · FY2027
I1A.0 Resistant hypertension
BillableValid for claims as a specific diagnosis code
About I1A.0
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Coding notes for I1A.0
Applicable to Other names for conditions reported with this code.
- Apparent treatment resistant hypertension
- Treatment resistant hypertension
- True resistant hypertension
Code first Report the underlying condition's code before this one.
Block I10-I1A notes (apply to every code in it)
Excludes1 Not coded here: never report these together with this code (use the code given instead).
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
Chapter 9 notes (apply to every code in it)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- 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.-)
Latest research on hypertension
- New guidelines limit hypertension treatment in adults over 65
- The incidence of hypertension and infections may increase with age among patients with ulcerative colitis treated with ozanimod
- Hypotension- and hypertension-avoidance strategies may yield similar neurocognitive outcomes following noncardiac surgery
- Maternal hypertension associated with adverse neurodevelopment outcomes in preterm infants
- #VisualAbstract: Sotatercept Improves Outcomes in Patients with Pulmonary Arterial Hypertension at High Risk for Death
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See 2MM+ plansICD-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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