What is MSP code 43?

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Medicare Secondary Payer (MSP) Code 43 indicates that a disabled beneficiary is under age 65 and is covered by a Large Group Health Plan (LGHP) through their own current employment or the current employment of a family member.

Key Details for Code 43

  • Target Group: Beneficiaries under the age of 65 who qualify for Medicare due to a disability.
  • Primary Insurance: An employer's group health plan (or a family member's group plan) acts as the primary payer, and Medicare is secondary.
  • Size Requirement: The employer's group health plan must have 100 or more employees for this provision to be active and for the group plan to pay primary.
  • Medicare Requirement: The patient must have active Medicare Part A entitlement.
  • Billing / Value Code: When submitting claims, providers often use value code 43 along with the primary payer's payment details. You can review additional guidelines via CGS Medicare Condition and Value Codes or Novitas Solutions MSP Billing.

What is MSP type 43?

Medicare Secondary Payer (MSP) Code 43 designates a disabled beneficiary under the age of 65 who has coverage through a Large Group Health Plan (LGHP).

Key Details

  • Definition: The patient is under 65, qualifies for Medicare due to a disability, and is actively insured through their own current employment or a family member's current employment.
  • Employer Size Requirement: The employer or employee organization sponsoring the group health plan must have 100 or more employees for this primary/secondary relationship to apply.
  • Medicare's Role: Under Code 43, the employer's large group health plan acts as the primary payer, and Medicare pays as the secondary payer.
  • Part A Requirement: The beneficiary must have Medicare Part A entitlement for this specific MSP provision to take effect.

What are MSP codes?

Medicare Secondary Payer (MSP) codes are two-digit numeric codes used in medical billing to show that another insurance policy pays before Medicare.

These codes tell healthcare billers and insurance systems that Medicare is the secondary payer. Using them prevents duplicate or incorrect payments.

Common MSP Codes and Meanings

  • 12: Working aged beneficiary or spouse age 65 or older with an employer group health plan (EGHP).
  • 13: End-stage renal disease (ESRD) beneficiary during the 30-month coordination period.
  • 14: No-fault insurance or auto accident liability where another policy is primary.
  • 15: Workers' compensation.
  • 16: Public Health Service or other federal agency.
  • 41: Federal Black Lung program.
  • 43: Disabled beneficiary under age 65 with a large group health plan (LGHP).
  • 47: Other liability insurance.

Why MSP Codes Matter

  • Compliance: They ensure billing matches federal coordination of benefits rules.
  • Denial Prevention: Correct codes stop claims from being rejected or delayed by Medicare.
  • Accurate Payments: They clarify which insurer pays first to avoid costly overpayment corrections.

What does the value code 43 represent in Medicare billing?

Medicare Value Code 43 designates a disabled beneficiary under age 65 with a Large Group Health Plan (LGHP).

Key Details

  • Purpose: It is a Medicare Secondary Payer (MSP) code used on institutional claims (UB-04) to show the portion of a primary LGHP payment applied to covered Medicare charges.
  • Primary Payer Code: Associated with Payer Code G.
  • Amount Field: Providers enter the actual amount paid by the primary insurer. If claiming a conditional payment because the LGHP denied coverage, enter six zeros (0000.00).
  • Eligibility Rules: Applies only to beneficiaries under 65 on the date of service who are disabled and insured through current employment (or a family member's current employment) where the employer or multiple-employer group plan has 100 or more employees. Do not use Value Code 43 if the disability is due to End-Stage Renal Disease (ESRD)—use Value Code 13 instead.

What does Medicare Condition Code 43 represent?

Condition Code 43 in Medicare billing indicates that a patient's continued care plan after an inpatient hospital stay was related to their admission diagnosis, but the prescribed home health services were not provided within the 3-day post-discharge window.

Key Details About Condition Code 43

  • Purpose: Hospitals use this code on claims alongside discharge status code 06 (discharged/transferred to home under the care of an organized home health service organization) when home health care was planned but did not start within 3 days of discharge.
  • Impact on Payment: It helps explain why a patient returned home with organized home health care, yet no services fell into the immediate 3-day window. This ensures correct processing under Medicare's Post-Acute Care Transfer Policy.
  • Comparison to Code 42: While Condition Code 43 means the care was related to the admission but delayed past 3 days, Condition Code 42 is used when home health care is unrelated to the inpatient diagnosis.

You can review further guidelines on billing definitions via the Noridian Medicare Condition Codes Reference.

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9 related questions found

What is the MSP type code?

An MSP type code is a two-digit numeric code used in medical billing to show that Medicare is the secondary payer behind another primary insurance plan.

These codes tell Medicare why another insurer pays first, which helps prevent claim denials and incorrect payments. You can review official definitions in the Palmetto GBA Valid MSP Types guide.

Common MSP Type Codes

  • 12 — Working Aged: Patient is age 65 or older and has active job-based insurance through an employer with 20 or more employees.
  • 13 — End-Stage Renal Disease (ESRD): Patient has kidney failure and is in an initial 30-month coordination period where an employer plan pays first.
  • 14 — No-Fault / Auto: Medical costs result from a car crash or an accident covered by no-fault insurance.
  • 15 — Workers' Compensation: Treatment is for a job-related injury or illness.
  • 16 — Federal / PHS: Coverage falls under the Public Health Service or another federal agency.
  • 41 — Black Lung: Treatment is related to federal Black Lung benefits.
  • 43 — Disability: Patient is under age 65, has a disability, and is covered by a large employer group health plan with 100 or more employees.
  • 47 — Liability: Medical costs result from a general liability accident, such as a slip-and-fall or malpractice claim.

What does MSP pay for?

Medicare Savings Programs (MSPs) help pay for Medicare premiums, deductibles, coinsurance, and copayments for people with limited income and resources.

(Note: "MSP" can also stand for Medicare Secondary Payer, which is a rule determining when other insurance pays before Medicare, but "paying for" typically refers to Medicare Savings Programs).

What Different MSP Types Pay For

There are four types of Medicare Savings Programs:

  • Qualified Medicare Beneficiary (QMB): Pays for Part A and Part B monthly premiums, as well as Medicare deductibles, coinsurance, and copayments. It also stops providers from billing you for these costs.
  • Specified Low-Income Medicare Beneficiary (SLMB): Helps pay for your monthly Part B premium.
  • Qualifying Individual (QI): Helps pay for your monthly Part B premium (requires a first-come, annual renewal application).
  • Qualified Disabled and Working Individual (QDWI): Pays for Part A premiums for certain people with disabilities who returned to work and lost free Part A coverage.

Additional Benefits

  • Extra Help: Qualifying for most MSPs automatically enrolls you in Medicare Extra Help to lower prescription drug (Part D) costs.

What are the value codes used for MSP claims?

Medicare Secondary Payer (MSP) claims use specific value codes to identify the type of primary insurance coverage and financial adjustments.

Common MSP Value Codes

  • 12, 13, 14, 15, 16: Represent primary coverage types including Working Aged EGHP, ESRD coordination, No-fault/auto insurance, Worker's Compensation, and PHS/federal agencies.
  • 19: Worker's Compensation Set-Aside (WCMSA).
  • 41, 42, 43, 47: Cover the Federal Black Lung Program, Veterans Administration, disabled beneficiaries under 65 with an LGHP, and Liability Insurance.
  • 44: Represents the obligation amount accepted from a primary payer as payment in full (contractual allowance).

For complete details and guidance on pairing these values with corresponding primary payer codes, refer to resources like Novitas Solutions MSP Insurance Type Codes and FCSO MSP Value Codes and Payer Codes.

What does MSP mean for Medicare?

For Medicare, MSP stands for Medicare Secondary Payer, which is the term used when Medicare does not have primary responsibility for paying a healthcare claim.

In these situations, another insurance plan or entity must pay the bills first, and Medicare steps in second to cover remaining eligible costs.

Common Situations Involving MSP

  • Working Aged: A beneficiary is 65 or older and has group health coverage through a current job (theirs or a spouse's) with 20 or more employees.
  • Disability: A beneficiary is under 65 with a disability and is covered by a large group health plan.
  • End-Stage Renal Disease (ESRD): A beneficiary has kidney failure and is in a 30-month coordination period with a group health plan.
  • Accidents or Injuries: Liability insurance, no-fault auto insurance, or workers' compensation is responsible for the medical costs.

Why MSP Matters

  • Saves Money: It protects the Medicare Trust Funds by making sure private or other liability sources pay what they owe first.
  • Prevents Errors: It coordinates benefits properly so providers do not receive duplicate or incorrect payments.

What is MSP code 12?

Medicare Secondary Payer (MSP) code 12 indicates the Working Aged provision, meaning the Medicare beneficiary (or their spouse) is age 65 or older, actively working, and covered by an Employer Group Health Plan (EGHP) from an employer with 20 or more employees.

Key Details for Code 12

  • Primary Payer: The employer's group health plan pays first, and Medicare pays as the secondary payer.
  • Requirement: This code is required on electronic claims (such as loop 2000B, segment SBR-05) or as a value code on institutional claims when Medicare is secondary due to active employment.
  • Threshold: The employer must have at least 20 employees for the group health plan to be primary over Medicare.

For more details on electronic billing or specific claim adjustments, you can check the Novitas Solutions MSP Billing Guide or the CGS Medicare Billing Reference.