Coding Rules - Current as at 16-Dec-2019 17:30
Coding Rules published from June 2011 to March 2019 – Updated 16 December 2019Contents TOC \o "1-1" \h \z \u Multiple administrations of chemotherapy with anaesthesia PAGEREF _Toc27420214 \h 2Assignment of additional diagnosis codes for prematurity PAGEREF _Toc27420215 \h 3Skin tear during hand manipulation procedure for Dupuytren’s contracture PAGEREF _Toc27420216 \h 4TNM stage documentation PAGEREF _Toc27420217 \h 5Coding of allergic reactions NOS and anaphylactic reactions PAGEREF _Toc27420218 \h 6Cause of death and ACS 0002 Additional diagnoses PAGEREF _Toc27420219 \h 7Ref No: Q3406 | Published On: 15-Mar-2019 | Status: Updated | Updated On: 16-Dec-2019Multiple administrations of chemotherapy with anaesthesiaQ:What ACHI codes are assigned when intrathecal chemotherapy is assigned with general anaesthesia multiple times during an episode of care?A:As per the guidelines in ACS 0044 Pharmacotherapy/ACHI classification:When a patient receives pharmacotherapy for a neoplasm or neoplasm (treatment) related condition multiple times during an episode of care, and the same ACHI code applies, assign the ACHI code once only.Therefore, where chemotherapy (ie pharmacotherapy for a neoplasm or neoplasm (treatment) related condition) is assigned with anaesthesia multiple times during an episode of care, assign:a code from block [1920] Administration of pharmacotherapy with extension -00?Antineoplastic agent oncemultiple anaesthesia codes to indicate the number of visits to theatre (ie as many times as anaesthesia is administered), as per the guidelines in ACS 0031 Anaesthesia/Classification:2.? If the same anaesthetic is administered more than once during different 'visits to theatre', within the total episode of care (eg two general anaesthetics), it should be coded as many times as performed.…6. Sequence the anaesthetic code(s) immediately following the procedure code to which it relates.Example:Patient admitted for bone marrow aspiration and trephine (BMAT) and intrathecal (IT) chemotherapy. BMAT and IT chemotherapy performed with general anaesthesia (GA) on first visit to theatre. Two further sessions of IT chemotherapy performed with GA during the episode of care.Assign:30084-00 [800] Percutaneous biopsy of bone marrow96198-00 [1920] Intrathecal administration of pharmacological agent, antineoplastic agent92514-99 [1910] General anaesthesia, ASA 9992514-99 [1910] General anaesthesia, ASA 9992514-99 [1910] General anaesthesia, ASA 99?Published 15 March 2019,for implementation 01 January 2020.Ref No: Q3336 | Published On: 15-Dec-2018 | Status: Updated | Updated On: 16-Dec-2019Assignment of additional diagnosis codes for prematurityQ:Does prematurity need to meet the criteria in ACS 0002 Additional diagnoses?A:Prematurity is a significant indicator of neonatal morbidity and mortality.The Includes note at category P07 reflects the criteria and guidelines in ACS 0002:P07 Disorders related to short gestation and low birth weight, not elsewhere classifiedIncludes: the listed conditions, without further specification, as the cause of mortality, morbidity or additional care, in newbornACS 0002 Additional diagnosesFor classification purposes, additional diagnoses should be interpreted as conditions that significantly affect patient management in terms of requiring any of the following criteria:commencement, alteration or adjustment of therapeutic treatment diagnostic proceduresincreased clinical carePROBLEMS AND UNDERLYING CONDITIONS?If a problem with a known underlying cause?is being treated, then both conditions should be coded (see also ACS 0001 Principle diagnosis/Problems and underlying conditions).Therefore, assign a code from subcategories P07.2 Extreme immaturity or P07.3 Other and unspecified preterm infants for:all neonates with a gestational age of less than 37 completed weeks in the birth episode of careepisodes of care subsequent to the birth episode of care, when immaturity/prematurity meets the criteria in ACS 0002 Additional diagnoses.ACS 1605 Conditions originating in the perinatal period Example 2 reflects the logic in the second dot point above, where a code for prematurity (P07.22) is assigned as it meets the criteria in ACS 0002 (ie it is the underlying cause of the patient’s jaundice):A premature infant (born at 27 weeks; birth weight 700g), was transferred from another hospital at 30 days of age, for ongoing care of jaundice of prematurity and low birth weight. During this admission the infant received 24 hours of phototherapy and supplementary feeds.Codes:P59.0??? Neonatal jaundice associated with preterm deliveryP07.22? Extreme immaturity, 24 or more completed weeks but less than 28 completed weeksP07.02? Extremely low birth weight 500–749g90677-00 [1611] Other phototherapy, skinPublished 15 December 2018,for implementation 01 January 2020.Ref No: Q3274 | Published On: 15-Sep-2018 | Status: Updated | Updated On: 16-Dec-2019Skin tear during hand manipulation procedure for Dupuytren’s contractureQ:What codes are assigned for a skin tear that occurs during the treatment of Dupuytren’s contracture?A:Dupuytren’s disease is the contracture of the hand where tight cords develop in the palm and gradually cause the fingers to curl inwards resulting in the inability to straighten the fingers.?One of the treatment options for Dupuytren’s contracture is collagenase injections (eg Xiaflex). These are used to break down the collagen in the Dupuytren’s cords, which can then be broken by manipulating the finger. Skin tears are known to often occur during this manipulation of the fingers following collagenase injections (Atroshi et al. 2015; Henderson 2016; Melbourne Institute of Plastic Surgery 2018).For skin tears occurring during the manipulation of the hand for the treatment for Dupuytren’s contracture, assign as a best fit:T81.2?Accidental puncture and laceration during a procedure, not elsewhere classifiedY60.8 Unintentional cut, puncture, perforation or haemorrhage during other surgical and medical careY92.24 Place of occurrence, Health service area, this facilityFollow the Alphabetic Index Section I, Alphabetic Index of Diseases:Complication(s) (from) (of)- accidental puncture or laceration during procedure NEC T81.2Follow the Alphabetic Index Section II,?External causes of injury:?Unintentional event(s)- cut, cutting, haemorrhage, perforation or puncture (accidental) (during) (inadvertent)- - specified procedure NEC Y60.8and? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??Place of occurrence of external cause- health service area (not specified as this facility)- - this facility Y92.24Amendments will be considered for a future edition. References:Atroshi, I, Nordenskjold, J, Lauritzson, A, Ahlgren, E, Waldau, J & Walden, M 2015,? ‘Collagenase treatment of Dupuytren’s contracture using a modified injection method:? A prospective cohort study of skin tears in 164 hands, including short-term outcome’, Acta Orthopaedica, vol. 86, no. 3, pp. 310-315, viewed 10 May 2018, Henderson 2016, Dupuytren’s Contracture, James Henderson, Bristol, viewed 10 May 2018, Institute of Plastic Surgery, Dupuytren’s Disease 2018, The Melbourne Institute of Plastic Surgery, Malvern, viewed 10 May 2018, 15 September 2018,for implementation 01 January 2020.Ref No: Q3206 | Published On: 15-Jun-2018 | Status: Updated | Updated On: 16-Dec-2019TNM stage documentationQ:? ??Can a code formetastatic (secondary) lymph node neoplasm be assigned based on documentationof TNM staging?A:The TNM (Tumour,Node, Metastasis) staging system is a classification system used to describe cancer severity based on the size of the primary neoplasm and theextent of its spread in the body. Numbers are assigned after each letter (ie T,N and M) based on standardised criteria (eg T1N0MX or T3N1M0).Primary tumour (T) – refers to the depth of the tumour invasion.???????TX:Primary tumour cannot be evaluated.???????T0: Noevidence of primary tumour.???????T1, T2,T3, T4: Refers to the size and/or extent of the main tumour.A higher number after the T indicates a larger tumour, or invasion into adjacent tissue.T's maybe further divided to provide more detail, such as T3a and T3b.Regional lymph nodes (N) – refers to lymph node involvement.???????NX:Regional lymph nodes cannot be evaluated.???????N0: Noregional lymph node involvement (no cancer found in the lymph nodes).???????N1, N2,N3: Involvement of regional lymph nodes (number and/or extent of spread).The higher the number after the N, the more lymph nodes that contain cancer.Distant metastasis (M) – refers to whether the cancer has spread to other parts of the body.???????? MX: Metastasis cannot be evaluated.??????? M0: No distant metastasis (cancer has not spread to other parts of the body).??????? M1: Distant metastasis (cancer has spread to distant parts of the body)(American Joint Committee on Cancer 2017).ACS?0010 Clinical documentation and general abstraction guidelines/Test results and medication charts/Findings that provide more specificity about a diagnosis states:Laboratory, x-ray, pathological and other diagnostic results should be coded where they clearly add specificity to already documented conditions that meet the criteria for a principal diagnosis (see ACS0001 Principal diagnosis) or an additional diagnosis (see ACS 0002 Additional diagnoses).Therefore, do not assume a neoplasm diagnosis or a spread by interpreting the TNM staging system. Use the TNM to add specificity to a neoplastic condition documented elsewhere in the clinical record. Where documentation is unclear, seek clinical clarification to ascertain the severity of the neoplasm. Do not assign neoplasm codes based onthe TNM staging alone.Note: For classification purposes, terms suchas “lymph node involvement”/”positive lymph nodes” are regarded as documented evidence of a secondary (metastatic) lymph node neoplasm.References:American Joint Committee on Cancer, CancerStaging System 2017, AJCC, Chicago, viewed 17 July 2017, advice has modifications to correspond with an update in a subsequent edition of ICD-10-AM/ACHI/ACS.?Published 15 June 2018,for implementation 01 January 2020.Ref No: Q2905 | Published On: 15-Sep-2015 | Status: Updated | Updated On: 16-Dec-2019Coding of allergic reactions NOS and anaphylactic reactions?Q:How should allergic reactions not otherwise specified (NOS) and anaphylactic reactions be coded? Should symptom codes be assigned for allergic reactions?A:The correct code assignment for allergic reactions NOS and anaphylactic reactions are outlined below.Allergic reaction NOS:T78.4 Allergy, unspecified following the Alphabetic Index:Allergy, allergic (reaction) T78.4Allergic reaction NOS to food:T78.1 Other adverse food reactions, not elsewhere classified following the Alphabetic Index:Allergy, allergic (reaction) - food (any) (ingested) NEC T78.1Anaphylaxis / anaphylactic shock due to food:T78.0 Anaphylaxis and anaphylactic shock due to adverse food reaction following the Alphabetic Index:Anaphylaxis- due to- - food reaction T78.0?When assigning a code classified to category T63 Toxic effect of contact with venomous animals additional codes should be assigned for any associated allergic reaction as per the instructional note at this category.Symptoms such as wheeze, urticaria and swelling should not be coded when a diagnosis of allergic reaction or anaphylaxis has been established unless the symptom is significant in its own right and treated independently of the allergic reaction?(see also Note at the beginning of Chapter18 Symptoms, signs and abnormal clinicalfindings, not elsewhere classified).Assign external cause codes from Y37 Exposure to or contact with allergens as appropriate.This advice has a minor modification to correspond with an update in a subsequent edition of ICD-10-AM/ACHI/ACS.Published 15 September 2015,for implementation 01 January 2020. Ref No: Q2640 | Published On: 15-Jun-2011 | Status: Updated | Updated On: 16-Dec-2019Cause of death and ACS 0002 Additional diagnosesQ:A patient is planned for discharge after a two week admission for cellulitis of the toe with PVD. The clinical record noted that the patient had a history of ischaemic heart disease but it did not meet the criteria for code assignment as per ACS 0002 Additional diagnoses. On the planned day of discharge the patient is found dead in their bed. Myocardial infarction is subsequently listed on the death certificate as the cause of death.? Should the myocardial infarction be coded for epidemiological purposes even though it does not meet the criteria for code assignment as per ACS 0002?A:In the scenario cited, the cause of death (myocardial infarction) should not be coded, as it does not meet the criteria for code assignment as per ACS 0002 Additional diagnoses, which states:"For classification purposes, additional diagnoses should be interpreted as conditions that significantly affect patient management in terms of requiring any of the following criteria:commencement, alteration or adjustment of therapeutic treatmentdiagnostic proceduresincreased clinical care"ACS 0002 also states that additional diagnoses are coded to collect information about the care provided in Australian hospitals for the Admitted Patient Care National Minimum Data Set, not for epidemiological purposes:"The national morbidity data collection is not intended to describe the current disease status of the inpatient population but rather, the conditions that are significant in terms of treatment required, investigations needed and resources used in each episode of care."This advice has a minor modification to correspond with an update in a subsequent edition of ICD-10-AM/ACHI/ACS.?Published 15 June 2011,for implementation 01 January 2020. ................
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