FY2027 ICD-10-CM reference
I15: Secondary hypertension
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Secondary hypertension. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
CMS-HCC V28
Not applicable to this nonbillable heading
CMS-HCC V24
Not applicable to this nonbillable heading
ESRD
Not applicable to this nonbillable heading
PACE
Not applicable to this nonbillable heading
RxHCC
Not applicable to this nonbillable heading
HHS-HCC
Not applicable to this nonbillable heading
More specific FY2027 codes
- I15.0: Renovascular hypertensionBillable code
- I15.1: Hypertension secondary to other renal disordersBillable code
- I15.2: Hypertension secondary to endocrine disordersBillable code
- I15.8: Other secondary hypertensionBillable code
- I15.9: Secondary hypertension, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: I00-I99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: I00-I99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: I00-I99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: I00-I99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: I00-I99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: I00-I99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: I00-I99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: I00-I99 (chapter, inherited).
Excludes2
systemic connective tissue disorders (M30-M36)
Source: I00-I99 (chapter, inherited).
Excludes2
transient cerebral ischemic attacks and related syndromes (G45.-)
Source: I00-I99 (chapter, inherited).
Instructional note
code to identify:
Source: I10-I1A (section, inherited).
Instructional note
exposure to environmental tobacco smoke (Z77.22)
Source: I10-I1A (section, inherited).
Instructional note
history of tobacco dependence (Z87.891)
Source: I10-I1A (section, inherited).
Instructional note
occupational exposure to environmental tobacco smoke (Z57.31)
Source: I10-I1A (section, inherited).
Instructional note
tobacco dependence (F17.-)
Source: I10-I1A (section, inherited).
Instructional note
tobacco use (Z72.0)
Source: I10-I1A (section, inherited).
Excludes1
neonatal hypertension (P29.2)
Source: I10-I1A (section, inherited).
Excludes1
primary pulmonary hypertension (I27.0)
Source: I10-I1A (section, inherited).
Excludes2
hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Source: I10-I1A (section, inherited).
Code also
underlying condition
Source: I15 (category, direct).
Excludes1
postprocedural hypertension (I97.3)
Source: I15 (category, direct).
Excludes2
secondary hypertension involving vessels of brain (I60-I69)
Source: I15 (category, direct).
Excludes2
secondary hypertension involving vessels of eye (H35.0-)
Source: I15 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does I15 mean in FY2027?
The official ICD-10-CM descriptor is Secondary hypertension. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is I15 billable in FY2027?
The FY2027 order file marks I15 as a nonbillable heading. Select a complete billable child code.
Does I15 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition