ICD-10-CM Codes
K00-K95 Diseases of the digestive system
K65-K68 Diseases of peritoneum and retroperitoneum

Peritonitis K65- >

Use Additional

Use Additional Help

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.

code (B95-B97
ICD-10-CM Range B95-B97
Bacterial and viral infectious agents
Note
- These categories are provided for use as supplementary or additional codes to identify the infectious agent(s) in diseases classified elsewhere.
- B95 Streptococcus, Staphylococcus, and Enter...
- B96 Other bacterial agents as the cause of d...
- B97 Viral agents as the cause of diseases cl...
), to identify infectious agent, if known

Code Also

Code Also Help

A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.

if applicable diverticular disease of intestine (
ICD-10-CM Diagnosis Code K57
- K57 Diverticular disease of intestine
  - K57.0 Diverticulitis of small intestine with perfor...
    - K57.00 Diverticulitis of small intestine with perfor...
    - K57.01 Diverticulitis of small intestine with perfor...
  - K57.1 Diverticular disease of small intestine witho...
    - K57.10 Diverticulosis of small intestine without per...
    - K57.11 Diverticulosis of small intestine without per...
    - K57.12 Diverticulitis of small intestine without per...
    - K57.13 Diverticulitis of small intestine without per...
  - K57.2 Diverticulitis of large intestine with perfor...
    - K57.20 Diverticulitis of large intestine with perfor...
    - K57.21 Diverticulitis of large intestine with perfor...
  - K57.3 Diverticular disease of large intestine witho...
    - K57.30 Diverticulosis of large intestine without per...
    - K57.31 Diverticulosis of large intestine without per...
    - K57.32 Diverticulitis of large intestine without per...
    - K57.33 Diverticulitis of large intestine without per...
  - K57.4 Diverticulitis of both small and large intest...
    - K57.40 Diverticulitis of both small and large intest...
    - K57.41 Diverticulitis of both small and large intest...
  - K57.5 Diverticular disease of both small and large ...
    - K57.50 Diverticulosis of both small and large intest...
    - K57.51 Diverticulosis of both small and large intest...
    - K57.52 Diverticulitis of both small and large intest...
    - K57.53 Diverticulitis of both small and large intest...
  - K57.8 Diverticulitis of intestine, part unspecified...
    - K57.80 Diverticulitis of intestine, part unspecified...
    - K57.81 Diverticulitis of intestine, part unspecified...
  - K57.9 Diverticular disease of intestine, part unspe...
    - K57.90 Diverticulosis of intestine, part unspecified...
    - K57.91 Diverticulosis of intestine, part unspecified...
    - K57.92 Diverticulitis of intestine, part unspecified...
    - K57.93 Diverticulitis of intestine, part unspecified...
K57.-
)

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 K65. 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.

acute appendicitis with generalized peritonitis (
ICD-10-CM Diagnosis Code K35.2
Acute appendicitis with generalized peritonitis
Applicable To
- Appendicitis (acute) with generalized (diffuse) peritonitis following rupture or perforation of appendix
K35.2-
)
aseptic peritonitis (
ICD-10-CM Diagnosis Code T81.6
Acute reaction to foreign substance accidentally left during a procedure
Type 2 Excludes
- complications of foreign body accidentally left in body cavity or operation wound following procedure (T81.5-)
T81.6
)
benign paroxysmal peritonitis (
ICD-10-CM Diagnosis Code E85.0
Non-neuropathic heredofamilial amyloidosis
Applicable To
- Hereditary amyloid nephropathy
Code Also
- associated disorders, such as:
- autoinflammatory syndromes (M04.-)
Type 2 Excludes
- Transthyretin-related (ATTR) familial amyloid cardiomyopathy (E85.4)
E85.0
)
chemical peritonitis (
ICD-10-CM Diagnosis Code T81.6
Acute reaction to foreign substance accidentally left during a procedure
Type 2 Excludes
- complications of foreign body accidentally left in body cavity or operation wound following procedure (T81.5-)
T81.6
)
gonococcal peritonitis (
ICD-10-CM Diagnosis Code A54.85
Gonococcal peritonitis
Type 1 Excludes
- gonococcal pelviperitonitis (A54.24)
A54.85
)
neonatal peritonitis (
ICD-10-CM Diagnosis Code P78.0
Perinatal intestinal perforation
Applicable To
- Meconium peritonitis
P78.0-
ICD-10-CM Diagnosis Code P78.1
Other neonatal peritonitis
Applicable To
- Neonatal peritonitis NOS
P78.1
)
pelvic peritonitis, female (
ICD-10-CM Diagnosis Code N73.3
Female acute pelvic peritonitis
N73.3-
ICD-10-CM Diagnosis Code N73.5
Female pelvic peritonitis, unspecified
N73.5
)
periodic familial peritonitis (
ICD-10-CM Diagnosis Code E85.0
Non-neuropathic heredofamilial amyloidosis
Applicable To
- Hereditary amyloid nephropathy
Code Also
- associated disorders, such as:
- autoinflammatory syndromes (M04.-)
Type 2 Excludes
- Transthyretin-related (ATTR) familial amyloid cardiomyopathy (E85.4)
E85.0
)
peritonitis due to talc or other foreign substance (
ICD-10-CM Diagnosis Code T81.6
Acute reaction to foreign substance accidentally left during a procedure
Type 2 Excludes
- complications of foreign body accidentally left in body cavity or operation wound following procedure (T81.5-)
T81.6
)
peritonitis in chlamydia (
ICD-10-CM Diagnosis Code A74.81
Chlamydial peritonitis
A74.81
)
peritonitis in diphtheria (
ICD-10-CM Diagnosis Code A36.89
Other diphtheritic complications
Applicable To
- Diphtheritic peritonitis
A36.89
)
peritonitis in syphilis (late) (
ICD-10-CM Diagnosis Code A52.74
Syphilis of liver and other viscera
Applicable To
- Late syphilitic peritonitis
A52.74
)
peritonitis in tuberculosis (
ICD-10-CM Diagnosis Code A18.31
Tuberculous peritonitis
Applicable To
- Tuberculous ascites
A18.31
)
peritonitis with or following abortion or ectopic or molar pregnancy (
ICD-10-CM Diagnosis Code O00
Ectopic pregnancy
Includes
- ruptured ectopic pregnancy
Use Additional
- code from category O08 to identify any associated complication
O00
-
ICD-10-CM Diagnosis Code O07
Failed attempted termination of pregnancy
Includes
- failure of attempted induction of termination of pregnancy
- incomplete elective abortion
Type 1 Excludes
- incomplete spontaneous abortion (O03.0-)
O07
,
ICD-10-CM Diagnosis Code O08.0
Genital tract and pelvic infection following ectopic and molar pregnancy
Applicable To
- Endometritis following ectopic and molar pregnancy
- Oophoritis following ectopic and molar pregnancy
- Parametritis following ectopic and molar pregnancy
- Pelvic peritonitis following ectopic and molar pregnancy
- Salpingitis following ectopic and molar pregnancy
- Salpingo-oophoritis following ectopic and molar pregnancy
Type 1 Excludes
- sepsis following ectopic and molar pregnancy (O08.82)
- urinary tract infection (O08.83)
O08.0
)
peritonitis with or following appendicitis (
ICD-10-CM Diagnosis Code K35
- K35 Acute appendicitis
  - K35.2 Acute appendicitis with generalized peritonit...
    - K35.20 Acute appendicitis with generalized peritonit...
    - K35.21 Acute appendicitis with generalized peritonit...
  - K35.3 Acute appendicitis with localized peritonitis...
    - K35.30 Acute appendicitis with localized peritonitis...
    - K35.31 Acute appendicitis with localized peritonitis...
    - K35.32 Acute appendicitis with perforation and local...
    - K35.33 Acute appendicitis with perforation and local...
  - K35.8 Other and unspecified acute appendicitis
    - K35.80 Unspecified acute appendicitis
    - K35.89 Other acute appendicitis
      K35.890 Other acute appendicitis without perforation ...
      K35.891 Other acute appendicitis without perforation,...
K35.-
)
puerperal peritonitis (
ICD-10-CM Diagnosis Code O85
Puerperal sepsis
Applicable To
- Postpartum sepsis
- Puerperal peritonitis
- Puerperal pyemia
Type 1 Excludes
- fever of unknown origin following delivery (O86.4)
- genital tract infection following delivery (O86.1-)
- obstetric pyemic and septic embolism (O88.3-)
- puerperal septic thrombophlebitis (O86.81)
- urinary tract infection following delivery (O86.2-)
Type 2 Excludes
- sepsis during labor (O75.3)
Use Additional
- code (B95-B97), to identify infectious agent
O85
)
retroperitoneal infections (
ICD-10-CM Diagnosis Code K68
- K68 Disorders of retroperitoneum
  - K68.1 Retroperitoneal abscess
    - K68.11 Postprocedural retroperitoneal abscess
    - K68.12 Psoas muscle abscess
    - K68.19 Other retroperitoneal abscess
  - K68.9 Other disorders of retroperitoneum
K68.-
)

Clinical Information

Inflammation of the peritoneum (tissue that lines the abdominal wall and covers most of the organs in the abdomen). Peritonitis can result from infection, injury, or certain diseases. Symptoms may include swelling of the abdomen, severe pain, and weight loss.
Inflammation of the peritoneum due to infection by bacteria or fungi. Causes include liver disease, perforation of the gastrointestinal tract or biliary tract, and peritoneal dialysis. Patients usually present with abdominal pain and tenderness, fever, chills, and nausea and vomiting. It is an emergency medical condition that requires prompt medical attention and treatment.
Inflammation of the peritoneum lining the abdominal cavity as the result of infectious, autoimmune, or chemical processes. Primary peritonitis is due to infection of the peritoneal cavity via hematogenous or lymphatic spread and without intra-abdominal source. Secondary peritonitis arises from the abdominal cavity itself through rupture or abscess of intra-abdominal organs.
Inflammation of the peritoneum, a condition marked by exudations in the peritoneum of serum, fibrin, cells, and pus.
Inflammation of the thin membrane surrounding abdominal cavity, called peritoneum

Codes

K65 Peritonitis
- K65.0 Generalized (acute) peritonitis
- K65.1 Peritoneal abscess
- K65.2 Spontaneous bacterial peritonitis
- K65.3 Choleperitonitis
- K65.4 Sclerosing mesenteritis
- K65.8 Other peritonitis
- K65.9 Peritonitis, unspecified

Peritonitis K65- >

Bacterial and viral infectious agents

Acute appendicitis with generalized peritonitis

Acute reaction to foreign substance accidentally left during a procedure

Non-neuropathic heredofamilial amyloidosis

Acute reaction to foreign substance accidentally left during a procedure

Gonococcal peritonitis

Perinatal intestinal perforation

Other neonatal peritonitis

Female acute pelvic peritonitis

Female pelvic peritonitis, unspecified

Non-neuropathic heredofamilial amyloidosis

Acute reaction to foreign substance accidentally left during a procedure

Chlamydial peritonitis

Other diphtheritic complications

Syphilis of liver and other viscera

Tuberculous peritonitis

Ectopic pregnancy

Failed attempted termination of pregnancy

Genital tract and pelvic infection following ectopic and molar pregnancy

Puerperal sepsis