M1438
HCPCSLst knwn well <=210 min
Official HCPCS Level II long descriptor
Time last known well to hospital arrival less than or equal to 3.5 hours (<= 210 minutes)
HCPCS Level II code M1438 is maintained by CMS and is active in the current quarterly release.
Short descriptor
Lst knwn well <=210 min
Added to HCPCS: 2026-01-01
Nearby codes in M1
- M1430Ret exm ou no retinopthy doc
- M1431Telehealth enc
- M1432Telehealth enc
- M1433Oral chemo wthn 30 days enc
- M1434Orl chemo wthn 30 d post enc
- M1435Oral chemo in perf pd
- M1436Telehealth enc
- M1437Telehealth enc
- M1439Sig ocu cond imp surg out
- M1440Telehealth enc
- M1441Init dx slp apn = 1st enc
- M1442Telehealth enc
- M1443Telehealth enc
- M1444Del < 39 weeks gest
- M1445Pp care visit by 12 weeks
- M1446Pt died bef end meas pd
Where this code sits
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HCPCS Level II July 2026 quarterly update. Centers for Medicare & Medicaid Services (CMS), “July 2026 Alpha-Numeric HCPCS File” (HCPC2026_JUL_ANWEB_06172026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.