MA30: Missing, incomplete or invalid type of bill

What causes it

• The frequency digit is wrong — an original (1) sent for what should be a replacement (7) or a void (8)
• A type of bill that does not match the facility type enrolled with the payer
• A field left blank, or carrying a leading zero the payer does not accept
• A professional claim format sent for a service the payer wants on an institutional claim, or the reverse

How to work it

1. Read the payer’s billing guide for the facility type and set field 4 to the type of bill it names, with the right frequency digit.
2. Resubmit. If the payer already has the original on file, the resubmission is a replacement — frequency 7 — not another original, or you collect a duplicate denial next.
3. If the payer wants the service on a different claim form altogether, that is a setup problem in the billing system, not a one-off correction.

How to stop it recurring

Lock the type of bill per facility and service line in the billing system so it is selected, not typed.

Codes worked the same way

MA30 is corrected and resubmitted. So are these, which is why a queue sorted by recovery route moves faster than one sorted by code number — the same person, in the same system, with the same evidence to hand, clears all of them in one pass.

• CO-16 — Claim lacks information
• CO-4 — Modifier and code disagree
• CO-11 — Diagnosis and procedure disagree
• CO-140 — Member ID and name disagree
• CO-5 — Wrong place of service
• CO-9 — Diagnosis and age disagree

Specialties that name this among their costliest

These are specialties whose own worst denials include one of this kind. The line under each is the denial they name, quoted from their page so you can see what the link is based on.

• Pain Management
  Bilateral procedures billed without the correct modifier
• Anesthesia
  Time units miscalculated from an incomplete anesthesia record
• Orthopedics
  Modifier 25 denied on an E/M billed the same day as a procedure
• Behavioral Health
  Telehealth denied for the wrong place-of-service or modifier
• Gastroenterology
  Screening colonoscopy converted to diagnostic without modifier PT or 33
• Dermatology
  Modifier 59 on multiple lesion removals rejected as unbundling

What leaving it costs

Working a denied claim costs $57.23 per denied claim in administrative time. Source. At 100 denials a month — an illustration, not a measurement of your practice — that is $5,723 a month, or $68,676 a year, in labour alone.

The figure that makes it worth spending: about 90% of initially denied claims are eventually paid. Source. The reason a denial sits is almost never that nobody knows how to work it — it is that nobody has the hours.

Questions

Code descriptions are the standard X12 claim adjustment reason and remittance advice remark code text. Payer policies differ, and the payer’s own coverage policy governs any individual claim. This page is working guidance, not legal or clinical advice.