I70.73 ICD-10-CM Code: Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration
I70.73 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Diseases of the circulatory system (I00-I99) / Diseases of arteries, arterioles and capillaries (I70-I79)
I70.73
Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidanceAtherosclerosis of other type of bypass graft(s) of the right leg with ulceration
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for I70.73. Check the code and parent instructions in the Code Book.
Excludes 2
Official- certain conditions originating in the perinatal period (P04-P96)Inherited from I00-I99, I70
- certain infectious and parasitic diseases (A00-B99)Inherited from I00-I99, I70
- complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from I00-I99, I70
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from I00-I99, I70
- endocrine, nutritional and metabolic diseases (E00-E88)Inherited from I00-I99, I70
- injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from I00-I99, I70
- neoplasms (C00-D49)Inherited from I00-I99, I70
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from I00-I99, I70
- systemic connective tissue disorders (M30-M36)Inherited from I00-I99, I70
- transient cerebral ischemic attacks and related syndromes (G45.-)Inherited from I00-I99, I70
- arteriosclerotic cardiovascular disease (I25.1-)Inherited from I00-I99, I70
- arteriosclerotic heart disease (I25.1-)Inherited from I00-I99, I70
- atheroembolism (I75.-)Inherited from I00-I99, I70
- cerebral atherosclerosis (I67.2)Inherited from I00-I99, I70
- coronary atherosclerosis (I25.1-)Inherited from I00-I99, I70
- mesenteric atherosclerosis (K55.1)Inherited from I00-I99, I70
- precerebral atherosclerosis (I67.2)Inherited from I00-I99, I70
- primary pulmonary atherosclerosis (I27.0)Inherited from I00-I99, I70
Related Codes
Includes
Official- any condition classifiable to I70.711 and I70.721
- chronic limb-threatening ischemia of other type of bypass graft(s) of the right leg with ulceration
- critical limb ischemia of other type of bypass graft(s) of the right leg with ulceration
- arteriolosclerosisInherited from I70
- arterial degenerationInherited from I70
- arteriosclerosisInherited from I70
- arteriosclerotic vascular diseaseInherited from I70
- arteriovascular degenerationInherited from I70
- atheromaInherited from I70
- endarteritis deformans or obliteransInherited from I70
- senile arteritisInherited from I70
- senile endarteritisInherited from I70
- vascular degenerationInherited from I70
Excludes 1
OfficialNo Excludes 1 notes are included in this display for I70.73. Check the code and parent instructions in the Code Book.
Code First
OfficialNo Code First sequencing instructions are included in this display for I70.73. Check the code and parent instructions in the Code Book.
Use Additional
Official- code to identify severity of ulcer (L97.-)
- code to identify:Inherited from I70, I70.7
- exposure to environmental tobacco smoke (Z77.22)Inherited from I70, I70.7
- history of tobacco dependence (Z87.891)Inherited from I70, I70.7
- occupational exposure to environmental tobacco smoke (Z57.31)Inherited from I70, I70.7
- tobacco dependence (F17.-)Inherited from I70, I70.7
- tobacco use (Z72.0)Inherited from I70, I70.7
- code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)Inherited from I70, I70.7
Code Also
OfficialNo Code Also instructions are included in this display for I70.73. Check the code and parent instructions in the Code Book.
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
- Code
- I70.73
- Description
- Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- No
- Payment year
- 2026
Coder workflow notes
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What This Code Means
I70.73 is the ICD-10-CM diagnosis code for atherosclerosis of other type of bypass graft(s) of the right leg with ulceration. I70.73 sits in the ICD-10-CM chapter for diseases of the circulatory system (i00-i99), within the section covering diseases of arteries, arterioles and capillaries (i70-i79).
Header codes like I70.73 cannot be reported on claims directly; they organize child codes that share clinical context. Coders should select the billable child code that matches the documented presentation and then verify its current source-backed HCC mapping. Do not infer a child code or risk adjustment value from the header alone.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for I70.73 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Includes
Use Additional Code
- code to identify severity of ulcer (L97.-)