ICDcodes.org
FY2027

K50.813 — Crohn's disease of both small and large intestine with fistula

BillableCC

Is K50.813 billable?

Yes — K50.813 is billable for FY2027. K50.813 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K50.813 may be submitted for encounters from October 1, 2026 through September 30, 2027.

K50.813 at a glance

CodeK50.813
DescriptionCrohn's disease of both small and large intestine with fistula
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does K50.813 group to?

K50.813 sits in MDC 06 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 385Inflammatory Bowel Disease with MCCmedical
  • 386Inflammatory Bowel Disease with CCmedical
  • 387Inflammatory Bowel Disease without CC/MCCmedical

As a secondary diagnosis, K50.813 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is K50.813 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to K50.813. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Enteritis › regional › large intestine › with › complication › small intestineinvolvement › with › complication › fistula (acute) (diarrheal) (hemorrhagic) (noninfective)
  • Enteritis › regional › small intestine › with › complication › large intestineinvolvement › with › complication › fistula (acute) (diarrheal) (hemorrhagic) (noninfective)

Excludes1 — never code together — inherited from K50-K52

The conditions below can never be reported together with K50.813 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

Excludes1 — never code together — inherited from K50

The conditions below can never be reported together with K50.813 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • ulcerative colitis (K51.-)

Use additional code — inherited from K50

Report an additional code alongside K50.813 to fully describe the condition. K50.813 is sequenced first.

  • code to identify any associated fistulas, if applicable:
  • anal fistula (K60.3-)
  • anorectal fistula (K60.5-)
  • rectal fistula (K60.4-)
  • code to identify manifestations, such as:
  • pyoderma gangrenosum (L88)

Excludes2 — not included here — inherited from Chapter 11

The conditions below are not part of K50.813, but a patient may have both at the same time. When documentation supports it, K50.813 and the excluded code may both be reported.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

How long has K50.813 existed?

K50.813 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the K50.81 family? (5)