2020 ICD-10-CM Diagnosis Code M06.1

Adult-onset Still's disease

    2016 2017 2018 2019 2020 Billable/Specific Code Adult Dx (15-124 years)
  • M06.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M06.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M06.1 - other international versions of ICD-10 M06.1 may differ.
ICD-10-CM Coding Rules
  • M06.1 is applicable to adult patients aged 15 - 124 years inclusive.
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 M06.1. 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.
  • Still's disease NOS (
    ICD-10-CM Diagnosis Code M08.2

    Juvenile rheumatoid arthritis with systemic onset

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Still's disease NOS
    Type 1 Excludes
    • adult-onset Still's disease (M06.1-)
    M08.2-
    )
The following code(s) above M06.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M06.1:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
Approximate Synonyms
  • Adult onset still's disease
  • Adult onset stills disease
  • Rheumatoid arthritis with organ / system involvement
  • Systemic rheumatoid arthritis
Clinical Information
  • Systemic-onset rheumatoid arthritis in adults. It differs from classical rheumatoid arthritis in that it is more often marked by acute febrile onset, and generalized lymphadenopathy and hepatosplenomegaly are more prominent.
ICD-10-CM M06.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 545 Connective tissue disorders with mcc
  • 546 Connective tissue disorders with cc
  • 547 Connective tissue disorders without cc/mcc

Convert M06.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to M06.1:
  • Type 1 Excludes: M08.2
    ICD-10-CM Diagnosis Code M08.2

    Juvenile rheumatoid arthritis with systemic onset

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Still's disease NOS
    Type 1 Excludes
    • adult-onset Still's disease (M06.1-)

Diagnosis Index entries containing back-references to M06.1:
  • Still's disease or syndrome (juvenile) M08.20
    ICD-10-CM Diagnosis Code M08.20

    Juvenile rheumatoid arthritis with systemic onset, unspecified site

      2016 2017 2018 2019 2020 Billable/Specific Code
    • adult-onset M06.1

ICD-10-CM Codes Adjacent To M06.1
M06.06 Rheumatoid arthritis without rheumatoid factor, knee
M06.061 Rheumatoid arthritis without rheumatoid factor, right knee
M06.062 Rheumatoid arthritis without rheumatoid factor, left knee
M06.069 Rheumatoid arthritis without rheumatoid factor, unspecified knee
M06.07 Rheumatoid arthritis without rheumatoid factor, ankle and foot
M06.071 Rheumatoid arthritis without rheumatoid factor, right ankle and foot
M06.072 Rheumatoid arthritis without rheumatoid factor, left ankle and foot
M06.079 Rheumatoid arthritis without rheumatoid factor, unspecified ankle and foot
M06.08 …… vertebrae
M06.09 …… multiple sites
M06.1 Adult-onset Still's disease
M06.2 Rheumatoid bursitis
M06.20 …… unspecified site
M06.21 Rheumatoid bursitis, shoulder
M06.211 Rheumatoid bursitis, right shoulder
M06.212 Rheumatoid bursitis, left shoulder
M06.219 Rheumatoid bursitis, unspecified shoulder
M06.22 Rheumatoid bursitis, elbow
M06.221 Rheumatoid bursitis, right elbow
M06.222 Rheumatoid bursitis, left elbow
M06.229 Rheumatoid bursitis, unspecified elbow

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.