FY2027 ICD-10-CM reference
I70.23: Atherosclerosis of native arteries of right leg with ulceration
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Atherosclerosis of native arteries of right leg with ulceration. 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.
More specific FY2027 codes
- I70.231: Atherosclerosis of native arteries of right leg with ulceration of thighBillable code
- I70.232: Atherosclerosis of native arteries of right leg with ulceration of calfBillable code
- I70.233: Atherosclerosis of native arteries of right leg with ulceration of ankleBillable code
- I70.234: Atherosclerosis of native arteries of right leg with ulceration of heel and midfootBillable code
- I70.235: Atherosclerosis of native arteries of right leg with ulceration of other part of footBillable code
- I70.238: Atherosclerosis of native arteries of right leg with ulceration of other part of lower legBillable code
- I70.239: Atherosclerosis of native arteries of right leg with ulceration of unspecified siteBillable 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).
Includes
arteriolosclerosis
Source: I70 (category, inherited).
Includes
arterial degeneration
Source: I70 (category, inherited).
Includes
arteriosclerosis
Source: I70 (category, inherited).
Includes
arteriosclerotic vascular disease
Source: I70 (category, inherited).
Includes
arteriovascular degeneration
Source: I70 (category, inherited).
Includes
atheroma
Source: I70 (category, inherited).
Includes
endarteritis deformans or obliterans
Source: I70 (category, inherited).
Includes
senile arteritis
Source: I70 (category, inherited).
Includes
senile endarteritis
Source: I70 (category, inherited).
Includes
vascular degeneration
Source: I70 (category, inherited).
Instructional note
code to identify:
Source: I70 (category, inherited).
Instructional note
exposure to environmental tobacco smoke (Z77.22)
Source: I70 (category, inherited).
Instructional note
history of tobacco dependence (Z87.891)
Source: I70 (category, inherited).
Instructional note
occupational exposure to environmental tobacco smoke (Z57.31)
Source: I70 (category, inherited).
Instructional note
tobacco dependence (F17.-)
Source: I70 (category, inherited).
Instructional note
tobacco use (Z72.0)
Source: I70 (category, inherited).
Excludes2
arteriosclerotic cardiovascular disease (I25.1-)
Source: I70 (category, inherited).
Excludes2
arteriosclerotic heart disease (I25.1-)
Source: I70 (category, inherited).
Excludes2
atheroembolism (I75.-)
Source: I70 (category, inherited).
Excludes2
cerebral atherosclerosis (I67.2)
Source: I70 (category, inherited).
Excludes2
coronary atherosclerosis (I25.1-)
Source: I70 (category, inherited).
Excludes2
mesenteric atherosclerosis (K55.1)
Source: I70 (category, inherited).
Excludes2
precerebral atherosclerosis (I67.2)
Source: I70 (category, inherited).
Excludes2
primary pulmonary atherosclerosis (I27.0)
Source: I70 (category, inherited).
Instructional note
Mönckeberg's (medial) sclerosis
Source: I70.2 (self, inherited).
Instructional note
code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
Source: I70.2 (self, inherited).
Excludes2
atherosclerosis of bypass graft of extremities (I70.30-I70.79)
Source: I70.2 (self, inherited).
Includes
any condition classifiable to I70.211 and I70.221
Source: I70.23 (self, direct).
Includes
chronic limb-threatening ischemia of native arteries of right leg with ulceration
Source: I70.23 (self, direct).
Includes
critical limb ischemia of native arteries of right leg with ulceration
Source: I70.23 (self, direct).
Instructional note
code to identify severity of ulcer (L97.-)
Source: I70.23 (self, direct).
Compare the FY2027 additions, removals and billable-status changes
What does I70.23 mean in FY2027?
The official ICD-10-CM descriptor is Atherosclerosis of native arteries of right leg with ulceration. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is I70.23 billable in FY2027?
The FY2027 order file marks I70.23 as a nonbillable heading. Select a complete billable child code.
Does I70.23 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. Read the FY2027 Official Guidelines.
Review the FY2026 April edition