I70.203 — Unspecified atherosclerosis of native arteries of extremities, bilateral legs
Is I70.203 billable?
Yes, but I70.203 is an unspecified code. I70.203 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, I70.203 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting I70.203 — the more specific alternatives are listed below.
More specific alternatives
- I70.201Unspecified atherosclerosis of native arteries of extremities, right leg
- I70.202Unspecified atherosclerosis of native arteries of extremities, left leg
- I70.208Unspecified atherosclerosis of native arteries of extremities, other extremity
- I70.209Unspecified atherosclerosis of native arteries of extremities, unspecified extremity
I70.203 at a glance
| Code | I70.203 |
|---|---|
| Description | Unspecified atherosclerosis of native arteries of extremities, bilateral legs |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I70.203 group to?
I70.203 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 299Peripheral Vascular Disorders with MCCmedical
- 300Peripheral Vascular Disorders with CCmedical
- 301Peripheral Vascular Disorders without CC/MCCmedical
How is I70.203 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I70.203. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Arteriosclerosis, arteriosclerotic › extremities › leg › bilateral (diffuse) (obliterans) (of) (senile) (with calcification)
Use additional code — inherited from I70
Report an additional code alongside I70.203 to fully describe the condition. I70.203 is sequenced first.
Use additional code — inherited from I70.2
Report an additional code alongside I70.203 to fully describe the condition. I70.203 is sequenced first.
- code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I70.203, but a patient may have both at the same time. When documentation supports it, I70.203 and the excluded code may both be reported.
- 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.-)
Excludes2 — not included here — inherited from I70
The conditions below are not part of I70.203, but a patient may have both at the same time. When documentation supports it, I70.203 and the excluded code may both be reported.
Excludes2 — not included here — inherited from I70.2
The conditions below are not part of I70.203, but a patient may have both at the same time. When documentation supports it, I70.203 and the excluded code may both be reported.
- atherosclerosis of bypass graft of extremities (I70.30-I70.79)
How long has I70.203 existed?
I70.203 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which conditions are coded to I70.203?
What other codes are in the I70.20 family? (4)
- I70.201Unspecified atherosclerosis of native arteries of extremities, right leg
- I70.202Unspecified atherosclerosis of native arteries of extremities, left leg
- I70.208Unspecified atherosclerosis of native arteries of extremities, other extremity
- I70.209Unspecified atherosclerosis of native arteries of extremities, unspecified extremity