Does S35.318S require prior authorization?

No, S35.318S does not require prior authorization (high confidence). Covered without prior authorization.

`S35.318S`, Other specified injury of portal vein, sequela

ICD-10-CM

No Prior Auth Required

Covered without prior authorization (high confidence)

This billing and coding article provides guidelines that complement Local Coverage Determination L34415 for CT of the abdomen and pelvis; consult LCD L34415 for specific coverage indications, limitations, and documentation requirements.
The ordering/referring practitioner's assessment related to the patient's complaint and the specific reason for the test must be documented in the medical record.
The medical record must contain a referral/order on file for each non‑invasive vascular study performed.
Results of pertinent tests and procedures performed that relate to the indication must be included in the medical record and reported on the claim if known; otherwise report the symptoms that prompted the test.

Non-invasive vascular diagnostic tests are covered when ordered by the treating practitioner or a consulting physician who will use the results to manage the beneficiary's specific medical problem.
A documented referral/order must be on record for each individual non-invasive vascular study performed for coverage to apply.
Cerebrovascular arterial duplex follow-up is covered annually for stenosis 20–49% (diameter reduction).
Cerebrovascular arterial duplex follow-up is covered every six months for stenosis 50–79% (diameter reduction).
Cerebrovascular arterial duplex follow-up is covered every six months for stenosis 80–99% if surgical correction has not been performed.
After carotid endarterectomy, repeat ipsilateral (unilateral) duplex examinations are allowable at approximately six weeks, six months, and one year post‑procedure during the first year.

CGS-J15-L34045, Non-Invasive Vascular Studies

J15

CGS-J18-L34045, Non-Invasive Vascular Studies

J18

A56758, Billing and Coding: Non-Invasive Vascular Studies

NGS-J6-L33627, Non-Invasive Vascular Studies

A57636, Billing and Coding: Duplex Scanning

Ask Backwork about documentation requirements, denial risks, or coverage in your state.