K56.690
BillableOther partial intestinal obstruction
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is K56.690 an HCC code?
Yes. K56.690 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 K56.690
For K56.690to 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 K56.690 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
K56.690 is the ICD-10-CM diagnosis code for other partial intestinal obstruction. A partial blockage of the intestines that is not caused by adhesions, hernias, or other common causes. K56.690 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, K56.690 maps to Intestinal Obstruction/Perforation (HCC 78) with a community, non-dual, aged base RAF weight of 0.000. Under the older V24 model, K56.690 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.
This code is for 'other' causes of partial obstruction; verify the cause is not adhesions (K56.5) or hernia-related. Because K56.690 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 K56.690 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is for 'other' causes of partial obstruction; verify the cause is not adhesions (K56.5) or hernia-related
- •Document the underlying cause when possible to support medical necessity
Clinical Significance
K56.690 represents other causes of partial intestinal obstruction not captured by standard categories such as adhesions, hernias, or tumors. This diagnosis indicates that while the obstruction allows some passage of contents, it results from an uncommon or complex etiology requiring specialized management approaches.
Documentation Requirements
- ✓Documentation of partial obstruction allowing some passage
- ✓Identification of unusual or complex cause of obstruction
- ✓Exclusion of common causes (adhesions, hernias, tumors)
- ✓Evidence supporting the specific uncommon etiology
- ✓Imaging or operative findings confirming the cause
- ✓Management approach specific to the identified cause
- ✓Assessment of bowel viability and function
- ✓Plans for addressing underlying etiology when possible
Commonly Confused Codes
- •K56.51 — Intestinal adhesions with partial obstruction (when adhesional cause is present)
- •K56.600 — Partial intestinal obstruction unspecified cause (when cause is actually known but uncommon)
- •K56.41 — Fecal impaction (when impaction is the specific cause)
- •K56.49 — Other impaction of intestine (when impaction rather than other mechanism)
- •K43.3 — Parastomal hernia with obstruction (when hernia is the cause)