K56.699
BillableOther intestinal obstruction unspecified as to partial versus complete obstruction
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is K56.699 an HCC code?
Yes. K56.699 maps to Intestinal Obstruction/Perforation under the CMS-HCC V28 risk adjustment model (and Intestinal Obstruction/Perforation under V24).
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 K56.699
For K56.699to 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 K56.699 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
K56.699 is the ICD-10-CM diagnosis code for other intestinal obstruction unspecified as to partial versus complete obstruction. A blockage of the intestines from an unspecified cause where it is unclear if the blockage is partial or complete. K56.699 sits in the ICD-10-CM chapter for diseases of the digestive system (k00-k95), within the section covering other diseases of intestines (k55-k64).
Under the CMS-HCC V28 risk adjustment model, K56.699 maps to Intestinal Obstruction/Perforation (HCC 78) with a community, non-dual, aged base RAF weight of 0.000. Under the older V24 model, K56.699 mapped to the same category but with a base RAF weight of 0.226 — V28 recalibrated weights across the entire model. 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.
Use only when both the cause and the degree of obstruction (partial vs. complete) are undocumented. Because K56.699 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. 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, RAF weights, and MEAT documentation criteria for K56.699 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use only when both the cause and the degree of obstruction (partial vs. complete) are undocumented
- •Query the provider if additional documentation is available to assign a more specific code
Clinical Significance
K56.699 represents other intestinal obstruction where the degree (partial vs complete) cannot be specified but some information about the etiology is available. This diagnosis indicates bowel blockage requiring management based on clinical presentation while further evaluation determines the severity and optimal treatment approach.
Documentation Requirements
- ✓Evidence of intestinal obstruction from identifiable cause
- ✓Documentation that degree of obstruction cannot be determined
- ✓Exclusion of standard obstruction categories
- ✓Clinical monitoring to assess severity and progression
- ✓Imaging or diagnostic studies showing obstruction
- ✓Management approach appropriate for uncertain degree
- ✓Plans for serial assessment to determine severity
- ✓Documentation of specific etiology when identifiable
Commonly Confused Codes
- •K56.690 — Other partial intestinal obstruction (when partial degree is documented)
- •K56.691 — Other complete intestinal obstruction (when complete degree is documented)
- •K56.609 — Unspecified intestinal obstruction (when no etiologic information available)
- •K56.49 — Other impaction of intestine (when impaction is specific mechanism)
- •K59.9 — Functional intestinal disorder unspecified (functional rather than mechanical)