Familiarize yourself now with a few codes that will have broader application. Your diagnosis choices for connective tissue disorders will expand dramatically when ICD-10 goes into effect in October 2014. Here's what you'll need to know about which descriptors will change " and which won't " to ensure you pinpoint the most accurate code every time. Get Specific With Muscle Spasm Coding Muscle spasm coding gets more complicated than you might think with ICD-10. Currently: Looking ahead: Although the choice seems simple, you'll need to know the potential reversibility of the related muscle spasm/contraction in order to code correctly between a muscle spasm and a muscle contraction. If the muscle has contracted, become shortened, and fixes the limb permanently in one position, you'll report a code from the series M62.40-M62.49, which is for contracture of the muscle. However, if the contraction has some potential of reversibility, you'll submit one of the three muscle spasm codes noted above. "ICD-10 is supplying a very specific code for muscle contracture," says Kristi Stumpf, MCS-P, CPC, COSC, ACS-OR, owner of Precision Auditing and Coding. "ICD-10 has supplied 24 codes from M62.40 through M62.49 to specify specific locations, right versus left, an unspecified code for each body location for use when 'right' or 'left' are not clarified, and for 'other site' and 'multiple sites'." Mark These Codes That Will Have Broader Descriptors In most instances, ICD-10 will introduce a greater number of choices for diagnoses than ICD-9, or at least offer more specific diagnoses than you currently have. Another example of that trend is ligament disorders. Example 1: Example 2: "ICD-10 has listed a code specific to the muscle alone," Stumpf says. "There is also a specific code for disorder of ligament for ICD-10. The ligamentous disorder code is broken down by location and right versus left, with an unspecified code for each body area when right and left are not listed. Coders can now be more specific as the actual tissue affected." Check Out These Descriptors That Won't Change Many other connective tissue disorders your family physician might diagnose will retain their descriptors under ICD-10. Consider these examples of diagnoses where you'll learn new codes but not new descriptors: