K86.81 ICD-10-CM Code: Exocrine pancreatic insufficiency
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the digestive system (K00-K95) / Disorders of gallbladder, biliary tract and pancreas (K80-K87)
K86.81
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceExocrine pancreatic insufficiency
The pancreas does not produce enough digestive enzymes, leading to difficulty digesting food and nutrient absorption problems.
Buddy Insight
Exocrine pancreatic insufficiency represents inadequate pancreatic enzyme production, leading to maldigestion and malabsorption of nutrients.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
MappedHCC 66
RAF 0.0
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for K86.81 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for K86.81 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for K86.81 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for K86.81 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for K86.81 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for K86.81 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for K86.81 in this effective period.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is K86.81 an HCC code?
No. K86.81 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for K86.81
For K86.81to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed K86.81 during that encounter, not just copy-forwarded from a problem list.
What This Code Means
K86.81 is the ICD-10-CM diagnosis code for exocrine pancreatic insufficiency. The pancreas does not produce enough digestive enzymes, leading to difficulty digesting food and nutrient absorption problems. K86.81 sits in the ICD-10-CM chapter for diseases of the digestive system (k00-k95), within the section covering disorders of gallbladder, biliary tract and pancreas (k80-k87).
K86.81 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Limited HCC recognition with only RxHCC 66 mapping, which may undervalue the significant nutritional monitoring and enzyme replacement therapy requirements of this condition. Coders reviewing K86.81 should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for K86.81 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Often results from chronic pancreatitis, cystic fibrosis, or pancreatic surgery; link to the underlying cause when present
- •Document if patient requires enzyme replacement therapy (pancreatic supplements)
Clinical Significance
Exocrine pancreatic insufficiency represents inadequate pancreatic enzyme production, leading to maldigestion and malabsorption of nutrients. This condition requires lifelong pancreatic enzyme replacement therapy and nutritional monitoring to prevent deficiency states.
Documentation Requirements
- ✓Clinical evidence of maldigestion (steatorrhea, weight loss)
- ✓Pancreatic function tests showing reduced enzyme output
- ✓Documentation of fat-soluble vitamin deficiencies
- ✓History of chronic pancreatitis, cystic fibrosis, or pancreatic surgery
- ✓Response to pancreatic enzyme replacement therapy
- ✓Evidence of malabsorption through stool studies
- ✓Nutritional assessment showing deficiencies
- ✓Exclusion of other causes of malabsorption
Commonly Confused Codes
- •K90.9: Intestinal malabsorption unspecified when cause is not pancreatic
- •E84.19: Cystic fibrosis when this is the underlying cause
- •K86.0: Alcohol-induced chronic pancreatitis may be the cause
- •K90.0: Celiac disease causes malabsorption but not pancreatic insufficiency
- •Z90.410: Acquired absence of pancreas post-surgical