ICD-10 Code for Arthritis

The default ICD-10-CM 2027 code for arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) is M19.90 – Unspecified osteoarthritis, unspecified site. More specific codes depend on the details documented, as listed in the official index (221 codes, 114 billable).

Main code: M19.90 – Unspecified osteoarthritis, unspecified site
Billable: Yes

Index entries for Arthritis

allergic – see Arthritis, specified form NEC
ankylosing (crippling) (spine) – see also Spondylitis, ankylosing
- sites other than spine – see Arthritis, specified form NEC
atrophic – see Osteoarthritis
- spine – see Spondylitis, ankylosing
back – see Spondylopathy, inflammatory
blennorrhagic (gonococcal) – A54.42
Charcot's – see Arthropathy, neuropathic
- diabetic – see Diabetes, arthropathy, neuropathic
- syringomyelic – G95.0
chylous (filarial) – B74.9 – see also category M01
climacteric (any site) – see Arthritis, specified form NEC
crystal (-induced) – see Arthritis, in, crystals
deformans – see Osteoarthritis
degenerative – see Osteoarthritis
due to or associated with
- acromegaly – E22.0
- brucellosis – see Brucellosis
- caisson disease – T70.3 (header)
- diabetes – see Diabetes, arthropathy
- dracontiasis – B72 – see also category M01
- enteritis NEC
  - regional – see Enteritis, regional
- erysipelas – A46 – see also category M01
- erythema
  - epidemic – A25.1
  - nodosum – L52
- filariasis NOS – B74.9
- glanders – A24.0
- helminthiasis – B83.9 – see also category M01
- hemophilia – D66 – M36.2 [manifestation]
- Henoch- (Schönlein) – D69.0 – M36.4 [manifestation]
- human parvovirus – B97.6 – see also category M01
- infectious disease NEC
- leprosy (see also category M01) – A30.9 – see also Leprosy
- Lyme disease – A69.23
- mycobacteria – A31.8 – see also category M01
- parasitic disease NEC – B89 – see also category M01
- paratyphoid fever (see also category M01) – A01.4 – see also Fever, paratyphoid
- rat bite fever – A25.1 – see also category M01
- regional enteritis – see Enteritis, regional
- respiratory disorder NOS – J98.9
- serum sickness – T80.69 (header) – see also Reaction, serum
- syringomyelia – G95.0
- typhoid fever – A01.04
epidemic erythema – A25.1
facet joint – M47.819 – see also Spondylosis
febrile – see Fever, rheumatic
gonococcal – A54.42
gouty (acute) – see Gout
in (due to)
- acromegaly – E22.0 – see also subcategory M14.8-
- amyloidosis – E85.4 – see also subcategory M14.8-
- bacterial disease – A49.9 – see also subcategory M01
- Behçet's syndrome – M35.2
- caisson disease – T70.3 (header) – see also subcategory M14.8-
- coliform bacilli (Escherichia coli) – see Arthritis, in, pyogenic organism NEC
- crystals – M11.9
  - dicalcium phosphate – see Arthritis, in, crystals, specified type NEC
  - hydroxyapatite – M11.0- (header)
  - pyrophosphate – see Arthritis, in, crystals, specified type NEC
  - specified type NEC – M11.80
    - ankle – M11.87- (header)
    - elbow – M11.82- (header)
    - foot joint – M11.87- (header)
    - hand joint – M11.84- (header)
    - hip – M11.85- (header)
    - knee – M11.86- (header)
    - multiple sites – M11.89
    - shoulder – M11.81- (header)
    - vertebrae – M11.88
    - wrist – M11.83- (header)
- dermatoarthritis, lipoid – E78.81
- dracontiasis (dracunculiasis) – B72 – see also category M01
- endocrine disorder NEC – E34.9 – see also subcategory M14.8-
- enteritis, infectious NEC – A09 – see also category M01
  - specified organism NEC – A08.8 – see also category M01
- erythema
  - multiforme – L51.9 – see also subcategory M14.8-
  - nodosum – L52 – see also subcategory M14.8-
- gout – see Gout
- helminthiasis NEC – B83.9 – see also category M01
- hemochromatosis – E83.118 – see also subcategory M14.8-
- hemoglobinopathy NEC – D58.2 – M36.3 [manifestation]
- hemophilia NEC – D66 – M36.2 [manifestation]
- Hemophilus influenzae – M00.8- (header) – B96.3 [manifestation]
- Henoch (-Schönlein) – D69.0 – M36.4 [manifestation]
- hyperparathyroidism NEC – E21.3 – see also subcategory M14.8-
- hypersensitivity reaction NEC – T78.49 (header) – M36.4 [manifestation]
- hypogammaglobulinemia – D80.1 – see also subcategory M14.8-
- hypothyroidism NEC – E03.9 – see also subcategory M14.8-
- infection – see Arthritis, pyogenic or pyemic
  - spine – see Spondylopathy, infective
- infectious disease NEC
- leprosy – A30.9 – see also category M01
- leukemia NEC – C95.9- (header) – M36.1 [manifestation]
- lipoid dermatoarthritis – E78.81
- Lyme disease – A69.23
- Mediterranean fever, familial – M04.1 – see also subcategory M14.8-
- Meningococcus – A39.83
- metabolic disorder NEC – E88.9 – see also subcategory M14.8-
- multiple myelomatosis – C90.0- (header) – M36.1 [manifestation]
- mumps – B26.85
- mycosis NEC – B49 – see also category M01
- myelomatosis (multiple) – C90.0- (header) – M36.1 [manifestation]
- neurological disorder NEC – G98.0
- ochronosis – E70.29 – see also subcategory M14.8-
- O'nyong-nyong – A92.1 – see also category M01
- parasitic disease NEC – B89 – see also category M01
- paratyphoid fever – A01.4 – see also category M01
- Pseudomonas – see Arthritis, pyogenic, bacterial NEC
- psoriasis – L40.50
- pyogenic organism NEC – see Arthritis, pyogenic, bacterial NEC
- Reiter's disease – see Reiter's disease
- respiratory disorder NEC – J98.9 – see also subcategory M14.8-
- reticulosis, malignant – C86.0- (header) – see also subcategory M14.8-
- rubella – B06.82
- Salmonella (arizonae) (cholerae-suis) (enteritidis) (typhimurium) – A02.23
- sarcoidosis – D86.86
- specified bacteria NEC – see Arthritis, pyogenic, bacterial NEC
- sporotrichosis – B42.82
- syringomyelia – G95.0
- thalassemia NEC – D56.9 – M36.3 [manifestation]
- tuberculosis – see Tuberculosis, arthritis
- typhoid fever – A01.04
- urethritis, Reiter's – see Reiter's disease
- viral disease NEC – B34.9 – see also category M01
infectious or infective – see also Arthritis, pyogenic or pyemic
- spine – see Spondylopathy, infective
juvenile – M08.90
- with systemic onset – see Still's disease
- ankle – M08.97- (header)
- elbow – M08.92- (header)
- foot joint – M08.97- (header)
- hand joint – M08.94- (header)
- hip – M08.95- (header)
- knee – M08.96- (header)
- multiple site – M08.99
- pauciarticular – M08.40
  - ankle – M08.47- (header)
  - elbow – M08.42- (header)
  - foot joint – M08.47- (header)
  - hand joint – M08.44- (header)
  - hip – M08.45- (header)
  - knee – M08.46- (header)
  - shoulder – M08.41- (header)
  - specified site NEC – M08.4A
  - vertebrae – M08.48
  - wrist – M08.43- (header)
- psoriatic – L40.54
- rheumatoid – see Arthritis, rheumatoid, juvenile
- shoulder – M08.91- (header)
- specified site NEC – M08.9A
- vertebra – M08.98
- specified type NEC – M08.80
  - ankle – M08.87- (header)
  - elbow – M08.82- (header)
  - foot joint – M08.87- (header)
  - hand joint – M08.84- (header)
  - hip – M08.85- (header)
  - knee – M08.86- (header)
  - multiple site – M08.89
  - shoulder – M08.81- (header)
  - specified joint NEC – M08.88
  - vertebrae – M08.88
  - wrist – M08.83- (header)
- wrist – M08.93- (header)
meaning osteoarthritis – see Osteoarthritis
meningococcal – A39.83
menopausal (any site) – see Arthritis, specified form NEC
mutilans (psoriatic) – L40.52
mycotic NEC – B49 – see also category M01
neuropathic (Charcot) – see Arthropathy, neuropathic
- diabetic – see Diabetes, arthropathy, neuropathic
- nonsyphilitic NEC – G98.0
- syringomyelic – G95.0
ochronotic – E70.29 – see also subcategory M14.8-
palindromic (any site) – see Rheumatism, palindromic
pneumococcal – M00.10
- ankle – M00.17- (header)
- elbow – M00.12- (header)
- foot joint – see Arthritis, pneumococcal, ankle
- hand joint – M00.14- (header)
- hip – M00.15- (header)
- knee – M00.16- (header)
- multiple site – M00.19
- shoulder – M00.11- (header)
- vertebra – M00.18
- wrist – M00.13- (header)
postdysenteric – see Arthropathy, postdysenteric
postmeningococcal – A39.84
postrheumatic, chronic – see Arthropathy, postrheumatic, chronic
primary progressive – see also Arthritis, specified form NEC
- spine – see Spondylitis, ankylosing
psoriatic – L40.50
purulent (any site except spine) – see Arthritis, pyogenic or pyemic
- spine – see Spondylopathy, infective
pyogenic or pyemic (any site except spine) – M00.9
- bacterial NEC – M00.80
  - ankle – M00.87- (header)
  - elbow – M00.82- (header)
  - foot joint – see Arthritis, pyogenic, bacterial NEC, ankle
  - hand joint – M00.84- (header)
  - hip – M00.85- (header)
  - knee – M00.86- (header)
  - multiple site – M00.89
  - shoulder – M00.81- (header)
  - vertebra – M00.88
  - wrist – M00.83- (header)
- pneumococcal – see Arthritis, pneumococcal
- spine – see Spondylopathy, infective
- staphylococcal – see Arthritis, staphylococcal
- streptococcal – see Arthritis, streptococcal NEC
  - pneumococcal – see Arthritis, pneumococcal
reactive – see Reiter's disease
rheumatic – see also Arthritis, rheumatoid
- acute or subacute – see Fever, rheumatic
rheumatoid – M06.9
- with
  - carditis – see Rheumatoid, carditis
  - endocarditis – see Rheumatoid, carditis
  - heart involvement NEC – see Rheumatoid, carditis
  - lung involvement – see Rheumatoid, lung
  - myocarditis – see Rheumatoid, carditis
  - myopathy – see Rheumatoid, myopathy
  - pericarditis – see Rheumatoid, carditis
  - polyneuropathy – see Rheumatoid, polyneuropathy
  - rheumatoid factor – see Arthritis, rheumatoid, seropositive
  - splenoadenomegaly and leukopenia – see Felty's syndrome
  - vasculitis – see Rheumatoid, vasculitis
  - visceral involvement NEC – see Rheumatoid, arthritis, with involvement of organs NEC
- juvenile (with or without rheumatoid factor) – M08.00
  - with systemic onset – see Still's disease
  - ankle – M08.07- (header)
  - elbow – M08.02- (header)
  - foot joint – M08.07- (header)
  - hand joint – M08.04- (header)
  - hip – M08.05- (header)
  - knee – M08.06- (header)
  - multiple site – M08.09
  - shoulder – M08.01- (header)
  - specified site NEC – M08.0A
  - vertebra – M08.08
  - wrist – M08.03- (header)
- seronegative – M06.00
  - ankle – M06.07- (header)
  - elbow – M06.02- (header)
  - foot joint – M06.07- (header)
  - hand joint – M06.04- (header)
  - hip – M06.05- (header)
  - knee – M06.06- (header)
  - multiple site – M06.09
  - shoulder – M06.01- (header)
  - specified site NEC – M06.0A
  - vertebra – M06.08
  - wrist – M06.03- (header)
- seropositive – M05.9
  - specified NEC – M05.80
    - ankle – M05.87- (header)
    - elbow – M05.82- (header)
    - foot joint – M05.87- (header)
    - hand joint – M05.84- (header)
    - hip – M05.85- (header)
    - knee – M05.86- (header)
    - multiple sites – M05.89
    - shoulder – M05.81- (header)
    - specified site NEC – M05.8A
    - vertebra – see Spondylitis, ankylosing
    - wrist – M05.83- (header)
  - without organ involvement – M05.70
    - ankle – M05.77- (header)
    - elbow – M05.72- (header)
    - foot joint – M05.77- (header)
    - hand joint – M05.74- (header)
    - hip – M05.75- (header)
    - knee – M05.76- (header)
    - multiple sites – M05.79
    - shoulder – M05.71- (header)
    - specified site NEC – M05.7A
    - vertebra – see Spondylitis, ankylosing
    - wrist – M05.73- (header)
- specified type NEC – M06.80
  - ankle – M06.87- (header)
  - elbow – M06.82- (header)
  - foot joint – M06.87- (header)
  - hand joint – M06.84- (header)
  - hip – M06.85- (header)
  - knee – M06.86- (header)
  - multiple site – M06.89
  - shoulder – M06.81- (header)
  - specified site NEC – M06.8A
  - vertebra – M06.88
  - wrist – M06.83- (header)
- spine – see Spondylitis, ankylosing
rubella – B06.82
scorbutic – E54 – see also subcategory M14.8-
senile or senescent – see Osteoarthritis
septic (any site except spine) – see Arthritis, pyogenic or pyemic
- spine – see Spondylopathy, infective
serum (nontherapeutic) (therapeutic) – see Arthropathy, postimmunization
specified form NEC – M13.80
- ankle – M13.87- (header)
- elbow – M13.82- (header)
- foot joint – M13.87- (header)
- hand joint – M13.84- (header)
- hip – M13.85- (header)
- knee – M13.86- (header)
- multiple site – M13.89
- shoulder – M13.81- (header)
- specified joint NEC – M13.88
- wrist – M13.83- (header)
spine – see also Spondylosis
- infectious or infective NEC – see Spondylopathy, infective
- Marie-Strümpell – see Spondylitis, ankylosing
- pyogenic – see Spondylopathy, infective
- rheumatoid – see Spondylitis, ankylosing
- traumatic (old) – see Spondylopathy, traumatic
- tuberculous – A18.01
staphylococcal – M00.00
- ankle – M00.07- (header)
- elbow – M00.02- (header)
- foot joint – see Arthritis, staphylococcal, ankle
- hand joint – M00.04- (header)
- hip – M00.05- (header)
- knee – M00.06- (header)
- multiple site – M00.09
- shoulder – M00.01- (header)
- vertebra – M00.08
- wrist – M00.03- (header)
streptococcal NEC – M00.20
- ankle – M00.27- (header)
- elbow – M00.22- (header)
- foot joint – see Arthritis, streptococcal, ankle
- hand joint – M00.24- (header)
- hip – M00.25- (header)
- knee – M00.26- (header)
- multiple site – M00.29
- shoulder – M00.21- (header)
- vertebra – M00.28
- wrist – M00.23- (header)
suppurative – see Arthritis, pyogenic or pyemic
syphilitic (late) – A52.16
- congenital – A50.55 – M12.80 [manifestation]
syphilitica deformans (Charcot) – A52.16
temporomandibular joint – M26.64- (header)
toxic of menopause (any site) – see Arthritis, specified form NEC
transient – see Arthropathy, specified form NEC
traumatic (chronic) – see Arthropathy, traumatic
tuberculous – A18.02
- spine – A18.01
uratic – see Gout
urethritica (Reiter's) – see Reiter's disease
vertebral – see Spondylopathy, inflammatory
villous (any site) – see Arthropathy, specified form NEC

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.