I46.8: Cardiac arrest due to other underlying condition

I46.8, cardiac arrest due to other underlying condition, is listed as a covered diagnosis in 12 Medicare billing and coding articles that apply to 41 HCPCS Level II codes, including J0153 (Injection, adenosine, 1 mg (not to be used to report any…), J1250 (Injection, dobutamine hydrochloride, per 250 mg), J1245 (Injection, dipyridamole, per 10 mg). 5 of these codes have a 2026 DMEPOS fee schedule amount; K0606 pays $3,588.90 (RR) depending on the state. The articles come from 4 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.

HCPCS Level II codes with I46.8 as a covered diagnosis

CodeDescriptionMedicare coverageDMEPOS fee 2026 (state range)Articles listing it
J0153Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds)Special coverage instructions apply—5
J1250Injection, dobutamine hydrochloride, per 250 mgSpecial coverage instructions apply—5
J1245Injection, dipyridamole, per 10 mgSpecial coverage instructions apply—5
A9700Supply of injectable contrast material for use in echocardiography, per studySpecial coverage instructions apply—4
J3490Unclassified drugsSpecial coverage instructions apply—3
A9500Technetium tc-99m sestamibi, diagnostic, per study doseCarrier judgment—2
A9502Technetium tc-99m tetrofosmin, diagnostic, per study doseCarrier judgment—2
A9505Thallium tl-201 thallous chloride, diagnostic, per millicurieCarrier judgment—2
A9512Technetium tc-99m pertechnetate, diagnostic, per millicurieCarrier judgment—2
A9560Technetium tc-99m labeled red blood cells, diagnostic, per study dose, up to 30 millicuriesCarrier judgment—2
A9538Technetium tc-99m pyrophosphate, diagnostic, per study dose, up to 25 millicuriesCarrier judgment—2
A9501Technetium tc-99m teboroxime, diagnostic, per study doseCarrier judgment—2
Q9957Injection, perflutren lipid microspheres, per mlCarrier judgment—3
Q9956Injection, octafluoropropane microspheres, per mlCarrier judgment—3
Q9955Injection, perflexane lipid microspheres, per mlCarrier judgment—3
J2785Injection, regadenoson, 0.1 mgCarrier judgment—3
K0606Automatic external defibrillator, with integrated electrocardiogram analysis, garment typeCarrier judgment$3,588.90 (RR)1
K0609Replacement electrodes for use with automated external defibrillator, garment type only, eachCarrier judgment$1,148.78–$1,378.591
E0617External defibrillator with integrated electrocardiogram analysisCarrier judgment$433.30–$577.30 (RR)1
K0608Replacement garment for use with automated external defibrillator, eachCarrier judgment$172.74–$230.11 (NU)1
K0607Replacement battery for automated external defibrillator, garment type only, eachCarrier judgment$27.69–$36.87 (RR)1
A9999Miscellaneous dme supply or accessory, not otherwise specifiedCarrier judgment—1
Q9950Injection, sulfur hexafluoride lipid microspheres, per mlCarrier judgment—1
J0461Injection, atropine sulfate, 0.01 mgSpecial coverage instructions apply—3
J0280Injection, aminophyllin, up to 250 mgSpecial coverage instructions apply—3

16 more codes are listed. See every code with payment by region in Caduvo.

Medicare policy articles listing I46.8

A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.

Other I46 diagnoses (Cardiac arrest)

Frequently asked questions

Does Medicare cover I46.8 (Cardiac arrest due to other underlying condition)?

Medicare covers items and services, not diagnoses. 12 Medicare billing and coding articles list I46.8 as a covered diagnosis for 41 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.

Which HCPCS codes can be billed with ICD-10 I46.8?

The Level II codes from the policies most specific to this diagnosis are J0153 (Injection, adenosine, 1 mg (not to be used to report any…, 5 articles); J1250 (Injection, dobutamine hydrochloride, per 250 mg, 5 articles); J1245 (Injection, dipyridamole, per 10 mg, 5 articles); A9700 (Supply of injectable contrast material for use in…, 4 articles); J3490 (Unclassified drugs, 3 articles). Code choice depends on the item supplied; check each code's descriptor.

What does Medicare pay for equipment billed with I46.8?

Under the 2026 DMEPOS fee schedule (non-rural state fees): K0606 $3,588.90 (RR); K0609 $1,148.78 to $1,378.59; E0617 $433.30 to $577.30 (RR); K0608 $172.74 to $230.11 (NU). Medicare pays 80% of the allowed amount after the Part B deductible.

Which Medicare policy articles list I46.8?

A52458 (Automatic External Defibrillators - Policy Article); A58503 (Billing and Coding: Echocardiography for Myocardial Perfusion); A56494 (Billing and Coding: Cardiovascular Nuclear Medicine), and 9 more articles.

What is ICD-10-CM code I46.8?

I46.8 is the ICD-10-CM code for cardiac arrest due to other underlying condition, in category I46 (Cardiac arrest), chapter 9: Diseases of the circulatory system.

Next steps

Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.

Chapter 9: Diseases of the circulatory system · All diagnoses · HCPCS lookup