2021 ICD-10-CM Diagnosis Code K91.2

Postsurgical malabsorption, not elsewhere classified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • K91.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM K91.2 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of K91.2 - other international versions of ICD-10 K91.2 may differ.
Applicable To
  • Postsurgical blind loop syndrome
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 K91.2. 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.
  • malabsorption osteomalacia in adults (
    ICD-10-CM Diagnosis Code M83.2

    Adult osteomalacia due to malabsorption

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Postsurgical malabsorption osteomalacia in adults
    M83.2
    )
  • malabsorption osteoporosis, postsurgical (
    ICD-10-CM Diagnosis Code M80.8

    Other osteoporosis with current pathological fracture

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Drug-induced osteoporosis with current pathological fracture
    • Idiopathic osteoporosis with current pathological fracture
    • Osteoporosis of disuse with current pathological fracture
    • Postoophorectomy osteoporosis with current pathological fracture
    • Postsurgical malabsorption osteoporosis with current pathological fracture
    • Post-traumatic osteoporosis with current pathological fracture
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    M80.8-
    ,
    ICD-10-CM Diagnosis Code M81.8

    Other osteoporosis without current pathological fracture

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Drug-induced osteoporosis without current pathological fracture
    • Idiopathic osteoporosis without current pathological fracture
    • Osteoporosis of disuse without current pathological fracture
    • Postoophorectomy osteoporosis without current pathological fracture
    • Postsurgical malabsorption osteoporosis without current pathological fracture
    • Post-traumatic osteoporosis without current pathological fracture
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    M81.8
    )
The following code(s) above K91.2 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 K91.2:
  • 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
  • K91
    ICD-10-CM Diagnosis Code K91

    Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • complications of artificial opening of digestive system (K94.-)
    • complications of bariatric procedures (K95.-)
    • gastrojejunal ulcer (K28.-)
    • postprocedural (radiation) retroperitoneal abscess (K68.11)
    • radiation colitis (K52.0)
    • radiation gastroenteritis (K52.0)
    • radiation proctitis (K62.7)
    Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
Approximate Synonyms
  • Malabsorption, postoperative
  • Malnutrition following gastrointestinal surgery
  • Malnutrition post gi surgery
  • Post-surgical malabsorption
  • Short bowel syndrome
ICD-10-CM K91.2 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
  • 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert K91.2 to ICD-9-CM

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
Code annotations containing back-references to K91.2:
  • Type 1 Excludes: K90
    , K90.2
    ICD-10-CM Diagnosis Code K90

    Intestinal malabsorption

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • intestinal malabsorption following gastrointestinal surgery (K91.2)
    ICD-10-CM Diagnosis Code K90.2

    Blind loop syndrome, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Blind loop syndrome NOS
    Type 1 Excludes
    • congenital blind loop syndrome (Q43.8)
    • postsurgical blind loop syndrome (K91.2)

Diagnosis Index entries containing back-references to K91.2:
  • Complication(s) (from) (of)
    • gastrointestinal K92.9
      ICD-10-CM Diagnosis Code K92.9

      Disease of digestive system, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • surgical procedure (on) T81.9
      ICD-10-CM Diagnosis Code T81.9

      Unspecified complication of procedure

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • Disorder (of) - see also Disease
    • intestine, intestinal
      • carbohydrate absorption NEC E74.39
        ICD-10-CM Diagnosis Code E74.39

        Other disorders of intestinal carbohydrate absorption

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Disorder of intestinal carbohydrate absorption NOS
        • Glucose-galactose malabsorption
        • Sucrase deficiency
        • postoperative K91.2
  • Malabsorption K90.9
    ICD-10-CM Diagnosis Code K90.9

    Intestinal malabsorption, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • syndrome K90.9
      ICD-10-CM Diagnosis Code K90.9

      Intestinal malabsorption, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • postsurgical K91.2
    • postgastrectomy K91.2
    • postsurgical K91.2
  • Malnutrition E46
    ICD-10-CM Diagnosis Code E46

    Unspecified protein-calorie malnutrition

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Malnutrition NOS
    • Protein-calorie imbalance NOS
    Type 1 Excludes
    • nutritional deficiency NOS (E63.9)
    • following gastrointestinal surgery K91.2
  • Short, shortening, shortness
    • bowel syndrome K91.2
  • Syndrome - see also Disease
    • blind loop K90.2
      ICD-10-CM Diagnosis Code K90.2

      Blind loop syndrome, not elsewhere classified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Blind loop syndrome NOS
      Type 1 Excludes
      • congenital blind loop syndrome (Q43.8)
      • postsurgical blind loop syndrome (K91.2)
      • postsurgical K91.2
    • malabsorption K90.9
      ICD-10-CM Diagnosis Code K90.9

      Intestinal malabsorption, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • postsurgical K91.2
    • short
      • bowel K91.2
  • Tachyalimentation K91.2

ICD-10-CM Codes Adjacent To K91.2
K90.4 Other malabsorption due to intolerance
K90.41 Non-celiac gluten sensitivity
K90.49 Malabsorption due to intolerance, not elsewhere classified
K90.8 Other intestinal malabsorption
K90.81 Whipple's disease
K90.89 Other intestinal malabsorption
K90.9 Intestinal malabsorption, unspecified
K91 Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
K91.0 Vomiting following gastrointestinal surgery
K91.1 Postgastric surgery syndromes
K91.2 Postsurgical malabsorption, not elsewhere classified
K91.3 Postprocedural intestinal obstruction
K91.30 …… unspecified as to partial versus complete
K91.31 Postprocedural partial intestinal obstruction
K91.32 Postprocedural complete intestinal obstruction
K91.5 Postcholecystectomy syndrome
K91.6 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure
K91.61 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a digestive system procedure
K91.62 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating other procedure
K91.7 Accidental puncture and laceration of a digestive system organ or structure during a procedure
K91.71 Accidental puncture and laceration of a digestive system organ or structure during a digestive system procedure

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