MS-DRG · FY 2026 v43.0
MS-DRG 867 – Other Infectious and Parasitic Diseases Diagnoses with MCC
A Medical DRG in MDC 18 (Infectious & Parasitic Diseases, Systemic or Unspecified Sites). Inpatient cases group to DRG 867 when the ICD-10-CM principal diagnosis is one of the 400 codes listed below and a secondary diagnosis on the major complication or comorbidity (MCC) list is present. Its FY 2026 relative weight is 2.0932 with a geometric mean length of stay of 5.4 days.
Medical DRG – assigned by principal diagnosis✓ Official CMS v43.0 dataset
2.0932
Relative Weight
5.4
Geometric Mean LOS (days)
7.3
Arithmetic Mean LOS (days)
400
Principal Diagnosis Codes
Severity family
DRG 867with MCCWeight 2.0932 · GMLOS 5.4 daysDRG 868with CCWeight 1.0311 · GMLOS 3.4 daysDRG 869without CC/MCCWeight 0.7297 · GMLOS 2.4 days
How a case is assigned to DRG 867
The grouper first assigns the case to MDC 18 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here), then applies the severity split from secondary diagnoses: with MCC → 867; with CC → 868; without CC/MCC → 869.
ICD-10-CM
Principal Diagnosis Codes 400 codes · 88 categories
400 of 400 shown
A01 Typhoid and paratyphoid fevers11 codes
- A01.00 Typhoid fever, unspecified
- A01.01 Typhoid meningitis
- A01.02 Typhoid fever with heart involvement
- A01.03 Typhoid pneumonia
- A01.04 Typhoid arthritis
- A01.05 Typhoid osteomyelitis
- A01.09 Typhoid fever with other complications
- A01.1 Paratyphoid fever A
- A01.2 Paratyphoid fever B
- A01.3 Paratyphoid fever C
- A01.4 Paratyphoid fever, unspecified
A02 Other salmonella infections5 codes
A05 Other bacterial foodborne intoxications, not elsewhere classified1 code
- A05.1 Botulism food poisoning
A06 Amebiasis5 codes
A17 Tuberculosis of nervous system1 code
- A17.9 Tuberculosis of nervous system, unspecified
A18 Tuberculosis of other organs3 codes
A19 Miliary tuberculosis5 codes
A20 Plague5 codes
A21 Tularemia5 codes
A23 Brucellosis6 codes
A24 Glanders and melioidosis5 codes
A26 Erysipeloid3 codes
A28 Other zoonotic bacterial diseases, not elsewhere classified4 codes
A30 Leprosy [Hansen's disease]8 codes
A31 Infection due to other mycobacteria3 codes
A32 Listeriosis7 codes
A35 Other tetanus1 code
- A35 Other tetanus
A36 Diphtheria5 codes
A38 Scarlet fever4 codes
A42 Actinomycosis4 codes
A44 Bartonellosis4 codes
A48 Other bacterial diseases, not elsewhere classified7 codes
A49 Bacterial infection of unspecified site7 codes
- A49.01 Methicillin susceptible Staphylococcus aureus infection, unspecified site
- A49.02 Methicillin resistant Staphylococcus aureus infection, unspecified site
- A49.1 Streptococcal infection, unspecified site
- A49.2 Hemophilus influenzae infection, unspecified site
- A49.3 Mycoplasma infection, unspecified site
- A49.8 Other bacterial infections of unspecified site
- A49.9 Bacterial infection, unspecified
A50 Congenital syphilis26 codes
- A50.01 Early congenital syphilitic oculopathy
- A50.02 Early congenital syphilitic osteochondropathy
- A50.03 Early congenital syphilitic pharyngitis
- A50.04 Early congenital syphilitic pneumonia
- A50.05 Early congenital syphilitic rhinitis
- A50.06 Early cutaneous congenital syphilis
- A50.07 Early mucocutaneous congenital syphilis
- A50.08 Early visceral congenital syphilis
- A50.09 Other early congenital syphilis, symptomatic
- A50.1 Early congenital syphilis, latent
- A50.2 Early congenital syphilis, unspecified
- A50.30 Late congenital syphilitic oculopathy, unspecified
- A50.32 Late congenital syphilitic chorioretinitis
- A50.39 Other late congenital syphilitic oculopathy
- A50.44 Late congenital syphilitic optic nerve atrophy
- A50.51 Clutton's joints
- A50.52 Hutchinson's teeth
- A50.53 Hutchinson's triad
- A50.54 Late congenital cardiovascular syphilis
- A50.55 Late congenital syphilitic arthropathy
- A50.56 Late congenital syphilitic osteochondropathy
- A50.57 Syphilitic saddle nose
- A50.59 Other late congenital syphilis, symptomatic
- A50.6 Late congenital syphilis, latent
- A50.7 Late congenital syphilis, unspecified
- A50.9 Congenital syphilis, unspecified
A51 Early syphilis6 codes
A52 Late syphilis5 codes
A53 Other and unspecified syphilis2 codes
A54 Gonococcal infection4 codes
A65 Nonvenereal syphilis1 code
- A65 Nonvenereal syphilis
A68 Relapsing fevers3 codes
A69 Other spirochetal infections7 codes
A75 Typhus fever5 codes
A77 Spotted fever [tick-borne rickettsioses]9 codes
- A77.0 Spotted fever due to Rickettsia rickettsii
- A77.1 Spotted fever due to Rickettsia conorii
- A77.2 Spotted fever due to Rickettsia siberica
- A77.3 Spotted fever due to Rickettsia australis
- A77.40 Ehrlichiosis, unspecified
- A77.41 Ehrlichiosis chaffeensis [E. chaffeensis]
- A77.49 Other ehrlichiosis
- A77.8 Other spotted fevers
- A77.9 Spotted fever, unspecified
A78 Q fever1 code
- A78 Q fever
A79 Other rickettsioses6 codes
B38 Coccidioidomycosis3 codes
B39 Histoplasmosis4 codes
B40 Blastomycosis8 codes
B41 Paracoccidioidomycosis4 codes
B42 Sporotrichosis7 codes
B43 Chromomycosis and pheomycotic abscess5 codes
B44 Aspergillosis5 codes
B45 Cryptococcosis6 codes
B46 Zygomycosis8 codes
B48 Other mycoses, not elsewhere classified6 codes
B49 Unspecified mycosis1 code
- B49 Unspecified mycosis
B50 Plasmodium falciparum malaria3 codes
B51 Plasmodium vivax malaria3 codes
B52 Plasmodium malariae malaria3 codes
B53 Other specified malaria3 codes
B54 Unspecified malaria1 code
- B54 Unspecified malaria
B56 African trypanosomiasis3 codes
B57 Chagas' disease10 codes
- B57.1 Acute Chagas' disease without heart involvement
- B57.30 Chagas' disease with digestive system involvement, unspecified
- B57.31 Megaesophagus in Chagas' disease
- B57.32 Megacolon in Chagas' disease
- B57.39 Other digestive system involvement in Chagas' disease
- B57.40 Chagas' disease with nervous system involvement, unspecified
- B57.41 Meningitis in Chagas' disease
- B57.42 Meningoencephalitis in Chagas' disease
- B57.49 Other nervous system involvement in Chagas' disease
- B57.5 Chagas' disease (chronic) with other organ involvement
B58 Toxoplasmosis5 codes
B60 Other protozoal diseases, not elsewhere classified10 codes
- B60.00 Babesiosis, unspecified
- B60.01 Babesiosis due to Babesia microti
- B60.02 Babesiosis due to Babesia duncani
- B60.03 Babesiosis due to Babesia divergens
- B60.09 Other babesiosis
- B60.10 Acanthamebiasis, unspecified
- B60.11 Meningoencephalitis due to Acanthamoeba (culbertsoni)
- B60.19 Other acanthamebic disease
- B60.2 Naegleriasis
- B60.8 Other specified protozoal diseases
B64 Unspecified protozoal disease1 code
- B64 Unspecified protozoal disease
B65 Schistosomiasis [bilharziasis]3 codes
B66 Other fluke infections3 codes
B67 Echinococcosis9 codes
- B67.2 Echinococcus granulosus infection of bone
- B67.32 Echinococcus granulosus infection, multiple sites
- B67.39 Echinococcus granulosus infection, other sites
- B67.4 Echinococcus granulosus infection, unspecified
- B67.61 Echinococcus multilocularis infection, multiple sites
- B67.69 Echinococcus multilocularis infection, other sites
- B67.7 Echinococcus multilocularis infection, unspecified
- B67.90 Echinococcosis, unspecified
- B67.99 Other echinococcosis
B72 Dracunculiasis1 code
- B72 Dracunculiasis
B73 Onchocerciasis5 codes
B74 Filariasis7 codes
B75 Trichinellosis1 code
- B75 Trichinellosis
B81 Other intestinal helminthiases, not elsewhere classified1 code
- B81.4 Mixed intestinal helminthiases
B83 Other helminthiases6 codes
B89 Unspecified parasitic disease1 code
- B89 Unspecified parasitic disease
B90 Sequelae of tuberculosis1 code
- B90.8 Sequelae of tuberculosis of other organs
B92 Sequelae of leprosy1 code
- B92 Sequelae of leprosy
B94 Sequelae of other and unspecified infectious and parasitic diseases3 codes
B95 Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere10 codes
- B95.0 Streptococcus, group A, as the cause of diseases classified elsewhere
- B95.1 Streptococcus, group B, as the cause of diseases classified elsewhere
- B95.2 Enterococcus as the cause of diseases classified elsewhere
- B95.3 Streptococcus pneumoniae as the cause of diseases classified elsewhere
- B95.4 Other streptococcus as the cause of diseases classified elsewhere
- B95.5 Unspecified streptococcus as the cause of diseases classified elsewhere
- B95.61 Methicillin susceptible Staphylococcus aureus infection as the cause of diseases classified elsewhere
- B95.62 Methicillin resistant Staphylococcus aureus infection as the cause of diseases classified elsewhere
- B95.7 Other staphylococcus as the cause of diseases classified elsewhere
- B95.8 Unspecified staphylococcus as the cause of diseases classified elsewhere
B96 Other bacterial agents as the cause of diseases classified elsewhere16 codes
- B96.0 Mycoplasma pneumoniae [M. pneumoniae] as the cause of diseases classified elsewhere
- B96.1 Klebsiella pneumoniae [K. pneumoniae] as the cause of diseases classified elsewhere
- B96.20 Unspecified Escherichia coli [E. coli] as the cause of diseases classified elsewhere
- B96.21 Shiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere
- B96.22 Other specified Shiga toxin-producing Escherichia coli [E. coli] [STEC] as the cause of diseases classified elsewhere
- B96.23 Unspecified Shiga toxin-producing Escherichia coli [E. coli] [STEC] as the cause of diseases classified elsewhere
- B96.29 Other Escherichia coli [E. coli] as the cause of diseases classified elsewhere
- B96.3 Hemophilus influenzae [H. influenzae] as the cause of diseases classified elsewhere
- B96.4 Proteus (mirabilis) (morganii) as the cause of diseases classified elsewhere
- B96.5 Pseudomonas (aeruginosa) (mallei) (pseudomallei) as the cause of diseases classified elsewhere
- B96.6 Bacteroides fragilis [B. fragilis] as the cause of diseases classified elsewhere
- B96.7 Clostridium perfringens [C. perfringens] as the cause of diseases classified elsewhere
- B96.81 Helicobacter pylori [H. pylori] as the cause of diseases classified elsewhere
- B96.82 Vibrio vulnificus as the cause of diseases classified elsewhere
- B96.83 Acinetobacter baumannii as the cause of diseases classified elsewhere
- B96.89 Other specified bacterial agents as the cause of diseases classified elsewhere
B99 Other and unspecified infectious diseases2 codes
L94 Other localized connective tissue disorders1 code
- L94.6 Ainhum
N98 Complications associated with artificial fertilization1 code
- N98.0 Infection associated with artificial insemination
R89 Abnormal findings in specimens from other organs, systems and tissues1 code
- R89.9 Unspecified abnormal finding in specimens from other organs, systems and tissues
T80 Complications following infusion, transfusion and therapeutic injection2 codes
T88 Other complications of surgical and medical care, not elsewhere classified1 code
- T88.0XXA Infection following immunization, initial encounter
Z16 Resistance to antimicrobial drugs19 codes
- Z16.10 Resistance to unspecified beta lactam antibiotics
- Z16.11 Resistance to penicillins
- Z16.12 Extended spectrum beta lactamase (ESBL) resistance
- Z16.13 Resistance to carbapenem
- Z16.19 Resistance to other specified beta lactam antibiotics
- Z16.20 Resistance to unspecified antibiotic
- Z16.21 Resistance to vancomycin
- Z16.22 Resistance to vancomycin related antibiotics
- Z16.23 Resistance to quinolones and fluoroquinolones
- Z16.24 Resistance to multiple antibiotics
- Z16.29 Resistance to other single specified antibiotic
- Z16.30 Resistance to unspecified antimicrobial drugs
- Z16.31 Resistance to antiparasitic drug(s)
- Z16.32 Resistance to antifungal drug(s)
- Z16.33 Resistance to antiviral drug(s)
- Z16.341 Resistance to single antimycobacterial drug
- Z16.342 Resistance to multiple antimycobacterial drugs
- Z16.35 Resistance to multiple antimicrobial drugs
- Z16.39 Resistance to other specified antimicrobial drug
ICD-10-PCS
Procedure Codes
Procedure codes do not drive assignment for this DRG. DRG 867 is a Medical DRG, assigned from the principal diagnosis above.
Frequently Asked Questions
What is MS-DRG 867?
MS-DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC) is a medical DRG in MDC 18 (Infectious & Parasitic Diseases, Systemic or Unspecified Sites). Its FY 2026 relative weight is 2.0932 with a geometric mean length of stay of 5.4 days.
What is the difference between DRG 867, 868, 869?
All 3 share the same base category; the severity of secondary diagnoses separates them: 867 (with MCC), 868 (with CC), 869 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many diagnosis codes group to DRG 867?
400 ICD-10-CM principal diagnosis codes group to this DRG, spanning 88 three-character categories.
What is the relative weight of DRG 867?
The FY 2026 relative weight of this DRG is 2.0932, meaning reimbursement of roughly 2.09 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
← PreviousDRG 866 – Viral Illness without MCCNext →DRG 868 – Other Infectious and Parasitic Diseases Diagnoses with CC
Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.
