ICD-10-CM Codes
K00-K95 Diseases of the digestive system
K55-K64 Other diseases of intestines
K55- Vascular disorders of intestine
2021 ICD-10-CM Diagnosis Code K55

2021 ICD-10-CM Diagnosis Code K55

Vascular disorders of intestine

2016

2017

2018

2019

2020

2021

Non-Billable/Non-Specific Code

K55 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2021 edition of ICD-10-CM K55 became effective on October 1, 2020.
This is the American ICD-10-CM version of K55 - other international versions of ICD-10 K55 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K55. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

necrotizing enterocolitis of newborn (
ICD-10-CM Diagnosis Code P77
- P77 Necrotizing enterocolitis of newborn
  - P77.1 Stage 1 necrotizing enterocolitis in newborn
  - P77.2 Stage 2 necrotizing enterocolitis in newborn
  - P77.3 Stage 3 necrotizing enterocolitis in newborn
  - P77.9 Necrotizing enterocolitis in newborn, unspeci...
P77.-
)

The following code(s) above K55 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to K55:

K00-K95
2021 ICD-10-CM Range K00-K95
Diseases of the digestive system
Type 2 Excludes
- 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)
Diseases of the digestive system

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

ICD-10-CM Codes Adjacent To K55

K52.8 Other specified noninfective gastroenteritis and colitis

K52.81 Eosinophilic gastritis or gastroenteritis

K52.82 Eosinophilic colitis

K52.83 Microscopic colitis

K52.831 Collagenous colitis

K52.832 Lymphocytic colitis

K52.838 Other microscopic colitis

K52.839 …… unspecified

K52.89 Other specified noninfective gastroenteritis and colitis

K52.9 Noninfective gastroenteritis and colitis, unspecified

K55 Vascular disorders of intestine

K55.0 Acute vascular disorders of intestine

K55.01 Acute (reversible) ischemia of small intestine

K55.011 Focal (segmental) acute (reversible) ischemia of small intestine

K55.012 Diffuse acute (reversible) ischemia of small intestine

K55.019 …… extent unspecified

K55.02 Acute infarction of small intestine

K55.021 Focal (segmental) acute infarction of small intestine

K55.022 Diffuse acute infarction of small intestine

K55.029 …… extent unspecified

K55.03 Acute (reversible) ischemia of large intestine

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code K55

Vascular disorders of intestine

Diseases of the digestive system