I70.40
Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities
Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 7 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 18 never code together
I70code
Excludes2
- arteriosclerotic cardiovascular disease (I25.1-)I25.1-
- arteriosclerotic heart disease (I25.1-)I25.1-
- atheroembolism (I75.-)I75.-
- cerebral atherosclerosis (I67.2)I67.2
- coronary atherosclerosis (I25.1-)I25.1-
- mesenteric atherosclerosis (K55.1)K55.1
- precerebral atherosclerosis (I67.2)I67.2
- primary pulmonary atherosclerosis (I27.0)I27.0
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.-
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 17
I70code
Includes
- arteriolosclerosis
- arterial degeneration
- arteriosclerosis
- arteriosclerotic vascular disease
- arteriovascular degeneration
- atheroma
- endarteritis deformans or obliterans
- senile arteritis
- senile endarteritis
- vascular degeneration
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 7 same parent — I70.4
I70.41 Athscl autologous vein bypass of the extrm w intrmt claud category I70.42 Athscl autologous vein bypass of the extremities w rest pain category I70.43 Athscl autologous vein bypass of the right leg w ulceration category I70.44 Athscl autologous vein bypass of the left leg w ulceration category I70.45 Athscl autologous vein bypass of extremity w ulceration I70.46 Athscl autologous vein bypass of the extremities w gangrene category I70.49 Oth athscl autologous vein bypass of the extremities category
Subordinate codes 5
I70.401 Unsp athscl autologous vein bypass of the extrm, right leg I70.402 Unsp athscl autologous vein bypass of the extrm, left leg I70.403 Unsp athscl autol vein bypass of the extrm, bilateral legs I70.408 Unsp athscl autol vein bypass of the extrm, oth extremity I70.409 Unsp athscl autol vein bypass of the extrm, unsp extremity
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.