CurrentBlue Cross Blue Shield - Rhode IslandPolicy N/A

Fecal calprotectin testing for inflammatory bowel disease

Defines medical necessity and noncoverage positions for fecal calprotectin testing for Medicare Advantage and Commercial products, including clinical indications (differential diagnosis when endoscopy with biopsy is being considered) and noncoverage for IBD management/monitoring and surveillance. Lists the CPT code and supporting ICD-10 codes and laboratory authorization rules.

Policy Summary

PayerBlue Cross Blue Shield - Rhode Island

PolicyFecal calprotectin testing for inflammatory bowel disease

Policy CodePolicy N/A

Change TypeNo material change

Effective DateN/A

Next Review DateN/A

Key ActionOnly the ordering physician may be involved in authorization, appeal, or other administrative processes; laboratories and representatives are prohibited from obtaining authorization on behalf of the ordering physician.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes noted in this policy update.

1CPT code covered

2Distinct positions (diagnostic vs management)

16ICD-10 codes listed

Coverage Summary

Defines coverage positions for fecal calprotectin testing with a mixed coverage stance. The policy applies to Medicare Advantage and Commercial products: testing is medically necessary when the clinical differential includes inflammatory bowel disease (IBD) versus noninflammatory disease and endoscopy with biopsy is being considered, and the test is not covered for Medicare Advantage and not medically necessary for Commercial products when used for management of active IBD or for surveillance/predicting relapse.

Medical-Necessity Criteria

Medically necessary indication (Medicare Advantage Plans and Commercial Products)

Fecal calprotectin testing is considered medically necessary when ALL of the following are met:

ALL of the following

The clinical differential diagnosis includes inflammatory bowel disease (IBD) versus noninflammatory bowel disease (including irritable bowel syndrome)
Endoscopy with biopsy is being considered (test used to select patients who can forgo endoscopy)

Coding: CPT 83993 (Calprotectin, fecal) is the code considered medically necessary when filed with supporting ICD-10 diagnosis codes.

ICD-10 codes that may support medical necessity include K52.3; K52.89; K52.9; K58.0-K58.9; R19.4; R19.5; R19.7; R19.8.

Not medically necessary / Not covered indications

Fecal calprotectin testing is considered not covered or not medically necessary for the following uses:

Not covered / Not medically necessary

Management of inflammatory bowel disease (including management of active IBD)
Medicare Advantage Plans: not covered; Commercial Products: not medically necessary
Surveillance for relapse of disease in remission (predicting relapse / monitoring disease activity)
Evidence insufficient to determine improvement in net health outcome

Evidence notes: For monitoring and relapse prediction, pooled sensitivity and specificity around 72% and 74% have been reported and evidence is insufficient to demonstrate improved health outcomes when used for management or surveillance.50 µg/g (diagnostic cutoff commonly used); 152 µg/g (reported optimal cutoff in relapse meta-analysis)

Laboratory/authorization constraint

Authorization process constraints:

Authorization/process constraints

Laboratories are not allowed to obtain clinical authorization or participate in the authorization process on behalf of the ordering physician
Only the ordering physician shall be involved in authorization, appeal, or other administrative processes related to prior authorization/medical necessity
If a laboratory provides a laboratory service that has not been authorized, the service will be denied as the financial liability of the participating laboratory and may not be billed to the member

Consequences: Use of a laboratory representative or third party to obtain authorization on behalf of the ordering physician is a violation and may lead to severe action up to termination from the provider network.

Provider Actions

Prior Authorization

Prior authorization not applicable

Prior Authorization: Not applicable (no provider action required).

Documentation Required

Orderer must participate in authorization

Only the ordering physician may be involved in authorization, appeal, or other administrative processes. Laboratories and representatives are prohibited from obtaining authorization or participating in the authorization process on behalf of the ordering physician.

Denial Risk

Denial if unauthorized laboratory service provided

If a laboratory provides a laboratory service that has not been authorized, the service will be denied and the financial liability falls on the participating laboratory; the service may not be billed to the member.

Background & Evidence

Fecal calprotectin is a calcium- and zinc-binding protein released from neutrophils and used as a stool biomarker of intestinal neutrophilic inflammation. It may help distinguish organic inflammatory conditions (eg, IBD) from noninflammatory conditions (eg, IBS).

Compared with serologic markers, fecal markers like calprotectin are more specific to GI inflammation because they are not elevated in extra-digestive inflammatory processes. Calprotectin comprises about 60% of neutrophil cytoplasmic proteins and is released during neutrophil activation or cell death.

A practical advantage of fecal calprotectin is specimen stability: it has been shown to be stable in feces at room temperature for up to 1 week, which facilitates home collection and mailing to a laboratory. Limitations include increases after NSAID use, variation with age, possible elevation with bleeding, and uncertainty about optimal diagnostic cutoffs.

Clinical uses studied include: differentiating IBD from noninflammatory bowel disease and selecting patients for endoscopy (most studies used a 50 µg/g cutoff as the recommended lower bound), monitoring disease activity, and predicting relapse (meta-analyses reported an optimal monitoring cutoff near 152 µg/g with pooled sensitivity ~72% and specificity ~74%), though evidence is sufficient for diagnostic use but insufficient to support improved health outcomes for management or surveillance.

Evidence summary

Definitions / thresholds

K52.3
K52.89
K52.9
K58.0
K58.1
K58.2
K58.3
K58.4
K58.5
K58.6

OpenPayer

Fecal calprotectin testing for inflammatory bowel disease

Coverage Summary

Medical-Necessity Criteria

Coding

Provider Actions

Background & Evidence

Revision History