Chapter XIII
Diseases of the musculoskeletal system and connective tissue
(M00-M99)

Rules Conventions GCS DChS.XIII.1 DChS.XIII.2

Arthropathies
(M00-M25)

Incl.:
Disorders affecting predominantly peripheral (limb) joints

Infectious arthropathies
(M00-M03)

Note:

This block comprises arthropathies due to microbiological agents.

Distinction is made between the following types of etiological relationship:

  1. direct infection of joint, where organisms invade synovial tissue and microbial antigen is present in the joint;

  2. indirect infection, which may be of two types: a reactive arthropathy, where microbial infection of the body is established but neither organisms nor antigens can be identified in the joint, and a postinfective arthropathy, where microbial antigen is present but recovery of an organism is inconstant and evidence of local multiplication is lacking.

M00 Pyogenic arthritis

Modifier-Hint
[See site code at the beginning of this chapter]
Excl.:
infection and inflammatory reaction due to internal joint prosthesis ( T84.5)
M00.0 Staphylococcal arthritis and polyarthritis
M00.1 Pneumococcal arthritis and polyarthritis
M00.2 Other streptococcal arthritis and polyarthritis
M00.8 Arthritis and polyarthritis due to other specified bacterial agents
Coding-Hint
Use additional code (B95-B96), if desired, to identify bacterial agent.
M00.9 Pyogenic arthritis, unspecified
Incl.:
Infective arthritis NOS

M01* Direct infections of joint in infectious and parasitic diseases classified elsewhere

Modifier-Hint
[See site code at the beginning of this chapter]
Excl.:
arthropathy in sarcoidosis ( M14.8*)
postinfective and reactive arthropathy ( M03.-*)
M01.0* Meningococcal arthritis (A39.8†)
Excl.:
postmeningococcal arthritis ( M03.0*)
M01.1* Tuberculous arthritis (A18.0†)
Excl.:
of spine ( M49.0*)
M01.2* Arthritis in Lyme disease (A69.2†)
M01.3* Arthritis in other bacterial diseases classified elsewhere
Incl.:
Arthritis in:
Gonococcal arthritis ( A54.4†)
M01.4* Rubella arthritis (B06.8†)
M01.5* Arthritis in other viral diseases classified elsewhere
Incl.:
Arthritis in:
M01.6* Arthritis in mycoses (B35-B49†)
M01.8* Arthritis in other infectious and parasitic diseases classified elsewhere

M02 Reactive arthropathies

Modifier-Hint
[See site code at the beginning of this chapter]
Excl.:
Behçet disease ( M35.2)
rheumatic fever ( I00)
M02.0 Arthropathy following intestinal bypass
M02.1 Postdysenteric arthropathy
M02.2 Postimmunization arthropathy
M02.3 Reiter disease
M02.8 Other reactive arthropathies
M02.9 Reactive arthropathy, unspecified

M03* Postinfective and reactive arthropathies in diseases classified elsewhere

Modifier-Hint
[See site code at the beginning of this chapter]
Excl.:
direct infections of joint in infectious and parasitic diseases classified elsewhere ( M01.-*)
M03.0* Postmeningococcal arthritis (A39.8†)
Excl.:
meningococcal arthritis ( M01.0*)
M03.1* Postinfective arthropathy in syphilis
Incl.:
Clutton joints ( A50.5†)
Excl.:
Charcot or tabetic arthropathy ( M14.6*)
M03.2* Other postinfectious arthropathies in diseases classified elsewhere
Incl.:
Postinfectious arthropathy in:
Excl.:
viral arthropathies ( M01.4-M01.5*)
M03.6* Reactive arthropathy in other diseases classified elsewhere
Incl.:
Arthropathy in infective endocarditis ( I33.0†)