Tests for the Evaluation of Preterm Labor and Premature Rupture of Membranes - (0099) — MM 0099 | CIGNA Coverage Update

Cigna modified MM 0099 for preterm labor and premature rupture of membranes testing, effective September 26, 2025. Here's what billing teams need to do.

Cigna Healthcare updated its coverage policy for preterm labor (PTL), premature rupture of membranes (PROM), and preterm delivery (PTD) risk testing under MM 0099. This revision classifies 12 codes — including CPT 84112, 0247U, 82677, and HCPCS S3652 — as either Experimental/Investigational/Unproven or Not Medically Necessary for specific testing indications. If your practice bills for obstetric testing in this clinical area, the September 26, 2025, effective date is your hard deadline for updating charge capture and reviewing your denial exposure.

Quick-Reference Table

Cigna Preterm Labor Coverage Criteria and Medical Necessity Requirements 2025

MM 0099 in the Cigna system addresses three clinical scenarios: evaluating active preterm labor, diagnosing premature rupture of membranes, and predicting risk of preterm delivery. The Cigna preterm labor coverage policy draws sharp lines between each scenario — and the lines matter, because crossing them triggers a Not Medically Necessary or Experimental designation.

The real issue here is that this coverage policy splits across two distinct classification buckets. Some codes get labeled Experimental/Investigational/Unproven because the clinical evidence doesn't support their use for these indications. Others get flagged as Not Medically Necessary when used to report specific biomarker results. These are different denials, and they require different appeal strategies.

This distinction matters for your billing team. A claim denied as Experimental/Investigational requires a different response than one denied for medical necessity. You can't appeal both with the same clinical documentation — your OBs and medical directors need to understand which category applies to which code before appeals are drafted.

The policy does not list specific prior authorization requirements within this coverage policy language. Check your individual plan contracts for Cigna, as prior authorization requirements vary by plan product. Confirm with your plan-level documents before assuming prior auth is not required.

Cigna Preterm Labor Testing Exclusions and Non-Covered Indications

Two categories of non-coverage apply under MM 0099. Understanding which applies to each code you bill changes how you document, appeal, and counsel your providers.

Experimental/Investigational/Unproven applies when the clinical evidence is insufficient to support coverage. Cigna uses this designation for CPT 84112 (placental alpha microglobulin-1 protein, PAMG-1), CPT 82677 (estriol), CPT 0247U (insulin-like growth factor-binding protein 4, IBP4-based preterm birth test), and HCPCS S3652 (saliva test for hormone level to assess preterm labor risk). All four are used in the obstetric testing space, and all four now carry the same dead-end designation for Cigna members.

The S3652 saliva hormone test is particularly worth flagging. Cigna designates S3652 as Experimental/Investigational/Unproven under MM 0099 as of September 26, 2025.

Not Medically Necessary applies to CPT 83516, 83518, 83519, 83520, 84702, 84703, 86140, and 87799 when used to report biomarker results in this clinical context. The immunoassay codes (83516, 83518, 83519, 83520), hCG codes (84702, 84703), C-reactive protein (86140), and the nucleic acid detection code (87799) are all in this bucket. These codes are not non-covered universally — they're non-covered specifically when billed for preterm labor biomarker evaluation in Cigna patients.

This is the nuance your billing team needs to internalize. CPT 86140 (CRP) gets billed for dozens of indications. It's not a blanket denial — it's indication-specific. Your documentation and diagnosis coding must be airtight, because Cigna will use diagnosis context to determine whether this exclusion applies.

Coverage Indications at a Glance

Cigna Preterm Labor Testing Billing Guidelines and Action Items 2025

This is where the policy gets actionable. The classification changes under MM 0099 are straightforward — but the operational work to protect your reimbursement before September 26, 2025, is not.

CPT, HCPCS, and ICD-10 Codes for Preterm Labor Testing Under MM 0099

Experimental / Investigational / Unproven Codes

These codes are non-covered under the Cigna preterm labor coverage policy when used for preterm labor, PROM, or preterm delivery risk evaluation.

Note: The MM 0099 policy truncates the CPT 0247U description. The description above reflects the standard CPT code definition, not the MM 0099 policy text.

Not Medically Necessary Codes

These codes are considered Not Medically Necessary when used to report biomarker results in the context of preterm labor, PROM, or PTD risk assessment.

No ICD-10-CM codes are specified in the MM 0099 policy data. Use clinically appropriate PTL/PROM/PTD diagnosis codes and confirm pairing logic with your billing team.