2026 ICD-10-CM Diagnosis Code K67Disorders of peritoneum in infectious diseases classified elsewhere
ICD-10-CM Codes›K00–K95›K65-K68›K67
- Billable — Valid for Submission
- Not Chronic
K67 is a billable ICD-10-CM diagnosis code for disorders of peritoneum in infectious diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 371 through 373. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Peritonitis and intra-abdominal abscess.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for K67.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code First
Type 1 Excludes
- peritonitis in chlamydia A74.81
- peritonitis in diphtheria A36.89
- peritonitis in gonococcal A54.85
- peritonitis in syphilis late A52.74
- peritonitis in tuberculosis A18.31
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.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Peritoneal Disorders
Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue.
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Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K67 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K67Overview
Is K67 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report disorders of peritoneum in infectious diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K67 group to?
On inpatient claims, disorders of peritoneum in infectious diseases classified elsewhere maps to MS-DRG 371, 372, 373, with relative weights from 0.7274 to 1.7731 depending on complications. Higher weights mean higher Medicare reimbursement.
Can K67 be a principal diagnosis?
No. This is a manifestation code: disorders of peritoneum in infectious diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
What is the ICD-9 equivalent of K67?
Under the General Equivalence Mappings, disorders of peritoneum in infectious diseases classified elsewhere converts to ICD-9-CM 567.0 (peritonitis in infec dis). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
