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E84.19 ICD-10-CM Code: Cystic fibrosis with other intestinal manifestations

E84.19 maps to CMS-HCC V28 277. A source-labeled RAF reference is available. Documentation must support MEAT. MEAT criteria · RAF Calculator · free HCC coding tools

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FY 2026 Apr update / Endocrine, nutritional and metabolic diseases (E00-E89) / Metabolic disorders (E70-E88)

E84.19

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Cystic fibrosis with other intestinal manifestations

This code covers cystic fibrosis with various intestinal problems other than meconium ileus, such as pancreatic insufficiency, distal intestinal obstruction, or malabsorption.

Buddy the Bee presenting code insight

Buddy Insight

This code captures cystic fibrosis with intestinal manifestations other than meconium ileus, including distal intestinal obstruction syndrome (DIOS), rectal prolapse, malabsorption, and steatorrhea.

CMS-HCC V28

HCC 277

Code-level coefficient reference

CMS-HCC V24

Historical

Historical

Not used for CY2026 payment

ACA/HHS

HCC 159

Code-level coefficient reference

ESRD/PACE

HCC 110

Code-level coefficient reference

RXHCC

HCC 225

Code-level coefficient reference

Code Book Path

Official
E84Cystic fibrosis
E84.1Cystic fibrosis with intestinal manifestations
E84.19Cystic fibrosis with other intestinal manifestations

Inclusion Terms

Official
  • Distal intestinal obstruction syndrome

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for E84.19 in this effective period.

Related Child Codes

Official
E84.11Meconium ileus in cystic fibrosis

Includes

Official

ICD-10-CM does not list Includes notes for E84.19 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for E84.19 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for E84.19 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for E84.19 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for E84.19 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Confirmed cystic fibrosis diagnosis
Specific intestinal manifestation documented (DIOS, malabsorption, steatorrhea, rectal prolapse, constipation)
Pancreatic enzyme replacement therapy regimen
Nutritional status and BMI assessment

MEAT Support

HCC Buddy guidance
Confirmed cystic fibrosis diagnosis
Specific intestinal manifestation documented (DIOS, malabsorption, steatorrhea, rectal prolapse, constipation)
Pancreatic enzyme replacement therapy regimen
Nutritional status and BMI assessment

Audit Caution

HCC Buddy guidance
Using this code when meconium ileus is the intestinal manifestation — E84.11 is more specific
Defaulting to E84.9 (unspecified) when intestinal manifestations are clearly documented
Coding malabsorption or steatorrhea codes separately without linking to CF as the cause
Not capturing both E84.0 and E84.19 when patient has both pulmonary and GI involvement

Common Mistakes

HCC Buddy guidance
E84.11 — Meconium ileus in cystic fibrosis: specific intestinal manifestation with its own code
E84.0 — Cystic fibrosis with pulmonary manifestations: for lung involvement; code both if applicable
E84.8 — Cystic fibrosis with other manifestations: for non-pulmonary, non-intestinal CF manifestations
K90.0 — Celiac disease: separate malabsorption condition unrelated to CF

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is E84.19 an HCC code?

Yes. E84.19 (Cystic fibrosis with other intestinal manifestations) maps to HCC 277, Cystic Fibrosis under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.998. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.

Coder answer: E84.19 is billable and maps to V28 HCC 277, Cystic Fibrosis. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code
E84.19
Description
Cystic fibrosis with other intestinal manifestations
HCC (V28)
HCC 277 — Cystic Fibrosis
RAF reference coefficient
0.998
Billable
Yes
Payment year
2026

HCC Category Mapping

V28HCC 277, Cystic Fibrosis
0.998
ESRDHCC 110, Cystic Fibrosis
Not separately weighted
RxHCCHCC 225, Cystic Fibrosis
Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work E84.19 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT Criteria for E84.19

For E84.19 to 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 E84.19 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

E84.19 is the ICD-10-CM diagnosis code for cystic fibrosis with other intestinal manifestations. This code covers cystic fibrosis with various intestinal problems other than meconium ileus, such as pancreatic insufficiency, distal intestinal obstruction, or malabsorption. E84.19 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering metabolic disorders (e70-e88).

Under the CMS-HCC V28 risk adjustment model, E84.19 maps to Cystic Fibrosis (HCC 277) with a source-labeled community, non-dual, aged reference coefficient of 0.998. No V24 mapping is shown for E84.19; use the applicable model and payment year when reviewing the V28 mapping. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Use this code for CF-related GI manifestations that are not meconium ileus; document the specific intestinal complication in the medical record. Because E84.19 maps to an HCC category, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) before the diagnosis is used for risk adjustment. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for E84.19 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • •Use this code for CF-related GI manifestations that are not meconium ileus; document the specific intestinal complication in the medical record
  • •Consider coding pancreatic insufficiency separately if it's a significant component of the clinical picture

Clinical Significance

This code captures cystic fibrosis with intestinal manifestations other than meconium ileus, including distal intestinal obstruction syndrome (DIOS), rectal prolapse, malabsorption, and steatorrhea. GI involvement affects nutritional status and requires pancreatic enzyme replacement therapy and nutritional monitoring.

Documentation Requirements

  • ✓Confirmed cystic fibrosis diagnosis
  • ✓Specific intestinal manifestation documented (DIOS, malabsorption, steatorrhea, rectal prolapse, constipation)
  • ✓Pancreatic enzyme replacement therapy regimen
  • ✓Nutritional status and BMI assessment
  • ✓Fat-soluble vitamin levels and supplementation
  • ✓Documentation that this is NOT meconium ileus (which has its own code E84.11)

Commonly Confused Codes

  • •E84.11: Meconium ileus in cystic fibrosis: specific intestinal manifestation with its own code
  • •E84.0: Cystic fibrosis with pulmonary manifestations: for lung involvement; code both if applicable
  • •E84.8: Cystic fibrosis with other manifestations: for non-pulmonary, non-intestinal CF manifestations
  • •K90.0: Celiac disease: separate malabsorption condition unrelated to CF

Child Codes

E84.11Meconium ileus in cystic fibrosis
HCC 277
E84.19Cystic fibrosis with other intestinal manifestations
HCC 277

Code Hierarchy

└E84Cystic fibrosis└E84.1Cystic fibrosis with intestinal manifestations└E84.19Cystic fibrosis with other intestinal manifestations
└E84.19Cystic fibrosis with other intestinal manifestations

Because E84.19 maps to an HCC category, the documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) before the diagnosis is used for risk adjustment.

E84.19 maps to CMS-HCC V28 category 277, Cystic Fibrosis. See the ICD-10 to HCC mapping hub for how the V28 crosswalk works. The mapping identifies a payment HCC category for E84.19. Review its source-labeled HCC coefficient above, check the RAF Calculator with complete member context for CMS-HCC V28 PY2026, and confirm the documentation the chart needs before the code is submitted. HCC Buddy shows no RAF score unless every required source and calculation check passes.

Work E84.19 in HCC Buddy

Open E84.19 in the Code Book for the full Index-to-Tabular path, MEAT checklist, and V28 HCC mapping, or in the Encoder to code from a keyword search. Pro includes 7 days to try everything, no card required.

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