1. M13 Other arthritis

    Excludes1

    1. M13.0 Polyarthritis, unspecified

    2. M13.1 Monoarthritis, not elsewhere classified

      1. M13.10 Monoarthritis, not elsewhere classified, unspecified site

      2. M13.11 Monoarthritis, not elsewhere classified, shoulder

        • M13.111 Monoarthritis, not elsewhere classified, right shoulder
        • M13.112 Monoarthritis, not elsewhere classified, left shoulder
        • M13.119 Monoarthritis, not elsewhere classified, unspecified shoulder
      3. M13.12 Monoarthritis, not elsewhere classified, elbow

        • M13.121 Monoarthritis, not elsewhere classified, right elbow
        • M13.122 Monoarthritis, not elsewhere classified, left elbow
        • M13.129 Monoarthritis, not elsewhere classified, unspecified elbow
      4. M13.13 Monoarthritis, not elsewhere classified, wrist

        • M13.131 Monoarthritis, not elsewhere classified, right wrist
        • M13.132 Monoarthritis, not elsewhere classified, left wrist
        • M13.139 Monoarthritis, not elsewhere classified, unspecified wrist
      5. M13.14 Monoarthritis, not elsewhere classified, hand

        • M13.141 Monoarthritis, not elsewhere classified, right hand
        • M13.142 Monoarthritis, not elsewhere classified, left hand
        • M13.149 Monoarthritis, not elsewhere classified, unspecified hand
      6. M13.15 Monoarthritis, not elsewhere classified, hip

        • M13.151 Monoarthritis, not elsewhere classified, right hip
        • M13.152 Monoarthritis, not elsewhere classified, left hip
        • M13.159 Monoarthritis, not elsewhere classified, unspecified hip
      7. M13.16 Monoarthritis, not elsewhere classified, knee

        • M13.161 Monoarthritis, not elsewhere classified, right knee
        • M13.162 Monoarthritis, not elsewhere classified, left knee
        • M13.169 Monoarthritis, not elsewhere classified, unspecified knee
      8. M13.17 Monoarthritis, not elsewhere classified, ankle and foot

        • M13.171 Monoarthritis, not elsewhere classified, right ankle and foot
        • M13.172 Monoarthritis, not elsewhere classified, left ankle and foot
        • M13.179 Monoarthritis, not elsewhere classified, unspecified ankle and foot
    3. M13.8 Other specified arthritis

      Inclusion term(s):

      • Allergic arthritis
      1. M13.80 Other specified arthritis, unspecified site

      2. M13.81 Other specified arthritis, shoulder

        • M13.811 Other specified arthritis, right shoulder
        • M13.812 Other specified arthritis, left shoulder
        • M13.819 Other specified arthritis, unspecified shoulder
      3. M13.82 Other specified arthritis, elbow

        • M13.821 Other specified arthritis, right elbow
        • M13.822 Other specified arthritis, left elbow
        • M13.829 Other specified arthritis, unspecified elbow
      4. M13.83 Other specified arthritis, wrist

        • M13.831 Other specified arthritis, right wrist
        • M13.832 Other specified arthritis, left wrist
        • M13.839 Other specified arthritis, unspecified wrist
      5. M13.84 Other specified arthritis, hand

        • M13.841 Other specified arthritis, right hand
        • M13.842 Other specified arthritis, left hand
        • M13.849 Other specified arthritis, unspecified hand
      6. M13.85 Other specified arthritis, hip

        • M13.851 Other specified arthritis, right hip
        • M13.852 Other specified arthritis, left hip
        • M13.859 Other specified arthritis, unspecified hip
      7. M13.86 Other specified arthritis, knee

        • M13.861 Other specified arthritis, right knee
        • M13.862 Other specified arthritis, left knee
        • M13.869 Other specified arthritis, unspecified knee
      8. M13.87 Other specified arthritis, ankle and foot

        • M13.871 Other specified arthritis, right ankle and foot
        • M13.872 Other specified arthritis, left ankle and foot
        • M13.879 Other specified arthritis, unspecified ankle and foot
      9. M13.88 Other specified arthritis, other site

      10. M13.89 Other specified arthritis, multiple sites

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.