2021 ICD-10-CM Diagnosis Code M05.00

Felty's syndrome, unspecified site

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • M05.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM M05.00 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M05.00 - other international versions of ICD-10 M05.00 may differ.
The following code(s) above M05.00 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 M05.00:
  • M00-M99
    2021 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
  • M05
    ICD-10-CM Diagnosis Code M05

    Rheumatoid arthritis with rheumatoid factor

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • rheumatic fever (I00)
    • juvenile rheumatoid arthritis (M08.-)
    • rheumatoid arthritis of spine (M45.-)
    Rheumatoid arthritis with rheumatoid factor
  • M05.0
    ICD-10-CM Diagnosis Code M05.0

    Felty's syndrome

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Rheumatoid arthritis with splenoadenomegaly and leukopenia
    Felty's syndrome
Approximate Synonyms
  • Felty's syndrome
  • Feltys syndrome
Clinical Information
  • A rare complication of rheumatoid arthritis with autoimmune neutropenia; and splenomegaly.
  • A syndrome characterized by the presence of rheumatoid arthritis, splenomegaly, and granulocytopenia. Patients are at an increased risk of infection because of the low white cell counts.
ICD-10-CM M05.00 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 545 Connective tissue disorders with mcc
  • 546 Connective tissue disorders with cc
  • 547 Connective tissue disorders without cc/mcc

Convert M05.00 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
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to M05.00:
  • Code First: J84.170
    , J84.178
    ICD-10-CM Diagnosis Code J84.170

    Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere

      2021 - New Code Billable/Specific Code
    Applicable To
    • Progressive fibrotic interstitial lung disease
    Code First
    • underlying disease, such as:
    • lung diseases due to external agents (J60-J70)
    • rheumatoid arthritis (M05.00-M06.9)
    • sarcoidosis (D86)
    • systemic connective tissue disorders (M30-M36)
    ICD-10-CM Diagnosis Code J84.178

    Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere

      2021 - New Code Billable/Specific Code
    Applicable To
    • Interstitial pneumonia (nonspecific) (usual) due to collagen vascular disease
    • Interstitial pneumonia (nonspecific) (usual) in diseases classified elsewhere
    • Organizing pneumonia due to collagen vascular disease
    • Organizing pneumonia in diseases classified elsewhere
    Code First
    • underlying disease, such as:
    • progressive systemic sclerosis (M34.0)
    • rheumatoid arthritis (M05.00-M06.9)
    • systemic lupus erythematosis (M32.0-M32.9)

Diagnosis Index entries containing back-references to M05.00:

ICD-10-CM Codes Adjacent To M05.00
M02.88 …… vertebrae
M02.89 …… multiple sites
M02.9 Reactive arthropathy, unspecified
M04 Autoinflammatory syndromes
M04.1 Periodic fever syndromes
M04.2 Cryopyrin-associated periodic syndromes
M04.8 Other autoinflammatory syndromes
M04.9 Autoinflammatory syndrome, unspecified
M05 Rheumatoid arthritis with rheumatoid factor
M05.0 Felty's syndrome
M05.00 …… unspecified site
M05.01 Felty's syndrome, shoulder
M05.011 Felty's syndrome, right shoulder
M05.012 Felty's syndrome, left shoulder
M05.019 Felty's syndrome, unspecified shoulder
M05.02 Felty's syndrome, elbow
M05.021 Felty's syndrome, right elbow
M05.022 Felty's syndrome, left elbow
M05.029 Felty's syndrome, unspecified elbow
M05.03 Felty's syndrome, wrist
M05.031 Felty's syndrome, right wrist

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